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Profile
| Academic position | Full Professor |
|---|---|
| Research fields | Astrophysics,Climatology |
| Keywords | Aerosol, radiation budget, Age of clusters, Cluster parameters, Mass function, Star formation, Stellar evolution |
| Honours and awards | 2015: Foreign correspondants member of the Academy of Royal Society of Science, Leige, Belgium 2014: Indian National Science Academy, New Delhi 2001: Indian Academy of Sciences, Bangalore, India 1999: National Academy of Sciences India, Allahabad, India 1998: Laser and Spectroscopic Society of India |
Current contact address
| Country | India |
|---|---|
| City | Bengaluru |
| Institution | Indian Institute of Astrophysics |
Host during sponsorship
| Prof. Dr. Klaas S. De Boer | Abteilung Sternwarte, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn |
|---|---|
| Prof. Dr. Ram Sagar | Indian Institute of Astrophysics, Bengaluru |
| Prof. Dr. Dominika Wylezalek | Astronomisches Rechen-Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg |
| Start of initial sponsorship | 01/01/1990 |
Programme(s)
| 1988 | Humboldt Research Fellowship Programme |
|---|
Publications (partial selection)
| 2015 | Ram Sagar, U.C. Dumka, M. Naja, N. Singh and V. Phanikumar ARIES, NAINITAL: A STRATEGICALLY IMPORTANT LOCATION FOR CLIMATE CHANGE STUDIES IN THE CENTRAL GANGETIC HIMALAYAN REGION . In: Current Science , 2015, 703-715 |
|---|---|
| 2014 | U. C. Dumka, S. N. Tripathi, Amit Misra, D. M. Giles, T. F. Eck, R. Sagar and B. N. Holben: LATITUDINAL VARIATION OF AEROSOL PROPERTIES FROM INDO-GANGETIC PLAIN TO CENTRAL HIMALAYAN FOOTHILLS DURING TIGERZ CAMPAIGN. In: JGR Atmosphere, 2014, doi 10.1002 (1)- doi 10.1002 (14) |
| 2014 | R. Sagar, M. Naja, G. Maheswar and A.K. Srivastava: SCIENCE AT HIGH-ALTITUDE SITES OF ARIES ASTROPHYSICS AND ATMOSPHERIC SCIENCE . In: Proceedings of the Indian National Science Academy , 2014, 759-790 |
| 2014 | R.K.S. Yadav, S.I. Leonova, R. Sagar and E.V. Glushkova: A MULTICOLOUR CCD PHOTOMETRIC STUDY OF GALACTIC STAR CLUSTERS SAI 63 AND SAI 75. In: Journal Astrophy. Astron., 2014, 143-156 |
| 2014 | T Sarangi, M. Naja, N. Ojha, R. Kumar, S. Lal, S. Venkataramani, A. Kumar, R. Sagar and H. C. Chandola FIRST SIMULTANEOUS MEASUREMENTS OF OZONE, CO AND NOY AT A HIGH ALTITUDE REGIONAL REPRESENTATIVE SITE IN THE CENTRAL HIMALAYAS . In: JGR Atmosphere , 2014, doi.10.1002(1)-doi.10.1002(17) |
| 2014 | N. Ojha, M. Naja, T. Sarangi, R. Kumar, P. Bhardwaj, S. Lal, S. Venkataramani, R. Sagar, A. Kumar and H.C. Chandola: ON THE PROCESSES INFLUENCING THE VERTICAL DISTRIBUTION OF OZONE OVER THE CENTRAL HIMALAYAS: ANALYSIS OF YEARLONG OZONE SONDE OBSERVATIONS. In: Atmospheric Environment, 2014, 201-211 |
| 2014 | Himali Bhatt, J.C. Pandey, K.P. Singh, R. Sagar and Brijesh Kumar: X-RAY FLARES OBSERVED FROM SIX YOUNG STARS LOCATED IN THE REGION OF STAR CLUSTERS NGC 869 AND IC 2602 . In: Journal Astrophy. Astron., 2014, 39-54 |
| 2013 | S. Bose et al. including R. Sagar SUPERNOVA 2012AW-A HIGH-ENERGY CLONE OF ARCHETYPAL TYPE IIP SN 1999EM . In: Mon. Not. R. Astron. Soc., 2013, 1871-1891 |
| 2013 | Arti Goyal, Gopal-Krishna, P.J. Wiita, C.S. Stalin and Ram Sagar : IMPROVED CHARACTERISATION OF INTRA-NIGHT OPTICAL VARIABILITY OF PROMINENT AGN CLASSES . In: Mon. Not. R. Astr. Soc. 435 (2013) 1300-1312 , 2013, 1300-1312 |
| 2013 | Brajesh Kumar, S.B. Pandey et al. including R. Sagar LIGHT CURVE AND SPECTRAL EVOLUTION OF THE TYPE IIB SN 2011FU . In: Mon. Not. R. Astr. Soc. , 2013, 308-321 |
| 2013 | Arti Goyal, Mukul Mhaskey, Gopal-Krishna, Paul J. Wiita, C.S. Stalin and Ram Sagar : ON THE PHOTOMETRIC ERROR CALIBRATION FOR THE DIFFERENTIAL LIGHT CURVES OF POINT-LIKE ACTIVE GALACTIC NUCLEI. In: Journal Astrophy. Astron. , 2013, 273-296 |
| 2013 | R.K.S. Yadav, Devesh P. Sariya and R. Sagar PROPER MOTIONS AND MEMBERSHIP PROBABILITIES OF STARS IN THE REGION OF OPEN CLUSTER NGC 3766 . In: Mon. Not. R. Astr. Soc. , 2013, 3350-3358 |
| 2013 | L. Balona, S. Joshi, Y. Joshi & R. Sagar : PULSATION AND ROTATION OF Kepler STARS IN THE NGC 6866 FIELD . In: Mon. Not. R. Astr. Soc., 2013, 1466-1478 |
| 2013 | R. Roy et al. including R. Sagar: SUPERNOVA 20007UY - METAMORPHOSIS OF AN ASPHERIC TYPE IB EXPLOSION . In: Mon. Not. R. Astr. Soc., 2013, 2032-2050 |
| 2013 | G. Bhatta including R. Sagar : THE 72-HOUR WEBT MICROVARIABILITY OBSERVATION OF BLAZAR S5 0716+714 IN 2009 . In: Astron. Astrophys. , 2013, A92(1)-A92(10) |
| 2013 | Himali Bhatt, J.C. Pandey, K.P. Singh, R. Sagar and Brijesh Kumar: X-RAY OBSERVATIONS OF EIGHT YOUNG OPEN STAR CLUSTERS I. MEMBERSHIP AND X-RAY LUMINOSITY . In: Journal Astrophy. Astron., 2013, 393-429 |
| 2012 | R. Sagar, Brijesh Kumar, A. Omar and Y.C. Joshi NEW OPTICAL TELESCOPES AT DEVASTHAL OBSERVATORY: 1.3-M INSTALLED AND 3.6-M UPCOMING. In: ASI Conference Series, 2012, 113-120 |
| 2012 | R. Sagar, Brijesh Kumar, A. Omar and A.K. Pandey : NEW OPTICAL TELESCOPE PROJECTS AT DEVASTHAL OBSERVATORY . In: Ground-based and Airborne Telescopes IV, Proceedings of SPIE, 2012, T1-T12 |
| 2012 | R. Sagar and S. B. Pandey : GRB AFTERGLOW OBSERVATIONS FROM ARIES NAINITAL AND THEIR IMPORTANCE . In: in Gamma-ray bursts, evolution of massive stars and star formation at high redshifts, ASI Conference Series , 2012, 1-13 |
| 2012 | Arti Goyal, Gopal Krishna, P.J. Wiita, G.C. Anupama, D.K. Sahu, Ram Sagar and S. Joshi INTRA-NIGHT OPTICAL VARIABILITY OF CORE DOMINATED RADIO QUASARS: THE ROLE OF OPTICAL POLARIZATION . In: Astr. Astrophys., 2012, A37(1)-A37(8) |
| 2012 | Himali Bhatt, Ram Sagar and J.C. Pandey STELLAR CONTENTS AND STAR FORMATION IN THE YOUNG CLUSTER STOCK 18 . In: New Astronomy, 2012, 160-166 |
| 2012 | R. Sagar and Brijesh Kumar : THE IMF OF INTERMEDIATE-MASS STARS IN YOUNG STAR CLUSTERS . In: ASI Conference Series , 2012, 173-179 |
| 2011 | U.C. Dumka, K. Krishna Moorthy, S.N. Tripathi, P. Hegde and Ram Sagar ALTITUDE VARIATION OF AEROSOL PROPERTIES OVER THE HIMALAYAN RANGE INFERRED FROM SPATIAL MEASUREMENTS . In: J. Atmospheric and Solar-Terrestrial Physics, 2011, 1747-1761 |
| 2011 | T. Bangia, A. Kumar, R. Sagar, P.K. Agarwal and S.K. Singh: DEVELOPMENT OF MIE LIDAR SYSTEM AND INITIAL CLOUD OBSERVATIONS OVER CENTRAL HIMALAYAN REGION . In: Scientific Research and Essays , 2011, 896-907 |
| 2011 | Gopal Krishna, Arti Goyal, S. Joshi, C. Karthick, Ram Sagar, P.J. Wiita, G.C. Anupama and D.K. Sahu : RAPID OPTICAL VARIABILITY OF TEV BLAZARS. In: Mon. Not. R. Astr. Soc. , 2011, 101-117 |
| 2011 | R. Roy, B. Kumar et al. including R. Sagar: SN 2008 IN BRIDGING THE GAP BETWEEN NORMAL AND FAINT SUPERNOVAE OF TYPE IIP. In: Astrophys. J. , 2011, id. 76 - 1-id. 76 -20 |
| 2011 | T. Bangia, A. Omar, R. Sagar, A. Kumar, S. Bhattacharjee, A. Reddy, P.K. Agarwal and D. V. Phanikumar : STUDY OF ATMOSPHERIC AEROSOLS OVER THE CENTRAL HIMALAYAN REGION USING A NEWLY DEVELOPED MIE LIGHT DETECTION AND RANGING SYSTEM: PRELIMINARY RESULTS . In: J. Applied Remote sensing , 2011, 053521 (1)-053521(12) |
| 2011 | T. Bangia, P.K. Agarwal, A. Kumar, S.K. Singh and R. Sagar : OPTO-MECHNICAL DESIGN, ANALYSIS AND ECONOMICAL MANUFACTURE OF A LARGE APERTURE LIDAR RECEIVER TELESCOPE . In: Journal Eng. Technol. Res., 2011, 180-196 |
| 2011 | R. K.S. Yadav, E.V. Glushkhova, D.P. Sariya, A.V. Porokhova, Brijesh kumar and Ram Sagar: Optical photometric study of the open clusters Koposov 12, Koposov 53 and Koposov 77. In: Monthly Notices of Royal Astronomical Society, 2011, 652-658 |
| 2011 | R. Roy, B. Kumar et al. including Ram Sagar: SN 2008gz -- most likely a normal type IIP event. In: Monthly Notices of Royal Astronomical Society, 2011, 167-183 |
| 2011 | Ram Sagar, A. Omar, Brijesh Kumar, Maheswar Gopinathan, S.B. Pandey, T. Bangia, J.S. Pant, V. Shukla and Sobhit Yadava THE NEW 130-CM OPTICAL TELESCOPE AT DEVASTHALNAINITAL . In: Current Science, 2011, 1020-1023 |
| 2010 | Ram Sagar, Brijesh Kumar, A. Omar and A.K. Pandey: New initiatives in optical astronomy at ARIES . In: ASI Conf. Ser , 2010, 203-210 |
| 2010 | Arti Goyal, Gopal Krishna, S. Joshi, Ram Sagar, P.J. Wiita, G.C. Anupama and D.K. Sahu: Optical variability of radio-intermediate quasars. In: Monthly Notices of Royal Astronomical Society, 2010, 2622-2634 |
| 2010 | Himali Bhatt, J.C. Pandey, Brijesh Kumar, K.P. Singh and Ram Sagar: X-ray emission characteristics of two Wolf-Rayet binaries: V444 Cyg and CD Cru. In: Monthly Notices of Royal Astronomical Society, 2010, 1767-1779 |
| 2010 | M.R. Samal, A.K. Pandey, D.K. Ojha, S.K. Ghosh, V.K. Kulkarni, N. Kusakabe, M. Tamura, B.C. Bhatt, M.A. Thompson and Ram Sagar: A multiwavelength study of star formation in the vicinity of Galactic HII region Sh2-100. In: Astrophysical Journal, 2010, 1015-1036 |
| 2010 | U.C. Dumka, K. Krishna Moorthy, Rajesh Kumar, P. Hegde, Ram Sagar, P. Pant, N. Singh and S. Suresh Babu Characteristics of aerosol black carbon mass concentration over a high altitude location in the Central Himalayas from multi-year measurements. In: Atmospheric Research, 2010, 510-521 |
| 2010 | A.K. Pandey, T.S. Sandhu, Ram Sagar and P.Battinelli: Integrated parameters of star clusters: a comparison of theory and observations. In: Monthly Notices of Royal Astronomical Society, 2010, 1491-1506 |
| 2010 | Y.C. Joshi, D. Narasimha, A.K. Pandey and R. Sagar : NAINITAL MICROLENSING SURVEY DETECTION OF SHORT PERIOD CEPHEIDS IN THE DISK OF M 31. In: Astr. Astrophys. , 2010, A66-1-A66-9 |
| 2010 | Y.C. Joshi, D. Narasimha, A.K. Pandey and Ram Sagar: Nainital Micro-lensing Survey -- detection of short period Cepheids in the disk of M 31. In: Astronomy & Astrophysics, 2010, A66-1-A66-9 |
| 2010 | B. J. Medhi, M. Gopinathan, J. C. Pandey, M. Tamura and Ram Sagar: Polarization towards the young open cluster NGC 6823. In: Monthly Notices of Royal Astronomical Society, 2010, 1577-1591 |
| 2010 | Himali Bhatt, J.C. Pandey, Brijesh Kumar, Ram Sagar and K.P. Singh: X-ray emission from O-type stars: DH Cep and HD 97434. In: New Astronomy, 2010, 755-759 |
| 2009 | U. C. Dumka, Ram Sagar and P. Pant: Retrieval of Columnar Aerosol Size Distributions from Spectral Attenuation Measurements over Central Himalayas. In: Aerosol and Air Quality Research, 2009, 344-351 |
| 2009 | K. Misra and Ram Sagar: An insight into the progenitors of gamma ray bursts from the optical afterglow observations. In: Current Science, 2009, 347-356 |
| 2009 | J. C. Pandey, B. J. Medhi, Ram Sagar and A.K. Pandey: LO Pegasi: An investigation of multi-band optical polarization. In: Monthly Notices of Royal Astronomical Society, 2009, 1004-1011 |
| 2009 | A. Kamble, K. Misra, D. Bhattacharya and Ram Sagar: Optical observations of GRB 050401 afterglow: A case of double jet model. In: Monthly Notices of Royal Astronomical Society, 2009, 214-220 |
| 2009 | Arti Goyal, Gopal Krishna, G.C. Anupama, D.K. Sahu, Ram Sagar: Unusual optical quiescence of the classical BL Lac object PKS 0735+178 on intra-night time scale. In: Monthly Notices of Royal Astronomical Society, 2009, 1622-1631 |
| 2009 | C.M. Raiteri et al. including Ram Sagar: WEBT multiwavelength monitoring and XMM-Newton observations of BL Lacertae in 2007-2008. Unveiling different emission components. In: Astronomy & Astrophysics, 2009, 769-779 |
| 2008 | Ram Sagar: A new activity phase of the blazar 3C 454.3: Multifrequency observations by the WEBT and XMM-Newton in 2007--2008. In: Astronomy & Astrophysics, 2008, 755-766 |
| 2008 | B. Kumar, Ram Sagar and J. Melnik: CCD photometric and mass function study of nine young Large Magellanic Cloud star clusters. In: Monthly Notices of Royal Astronomical Society, 2008, 1380-1397 |
| 2008 | B. Goldman et al. including Ram Sagar: CLOUDS search for variability in brown dwarf atmospheres: Infrared spectroscopic time series of L/T transition brown dwarfs. In: Astronomy & Astrophysics, 2008, 277-292 |
| 2008 | R. Kaur, B. Paul, B. Kumar and Ram Sagar: A study of the long term evolution of Quasi-Periodic Oscillations in the accretion powered X-ray pulsar 4U 1626-67. In: Astrophysical Journal , 2008, 1184-1188 |
| 2008 | R.K.S. Yadav, L.R. Bedin, G. Piotto, J. Anderson, S. Cassisi, S. Villanova, I. Platais, L. Pasquini, Ram Sagar and Y. Momany: Ground-based CCD astrometry with wide field imagers.II. A star catalogue for M 67: WFI@2.2m MPG/ESO astrometry, FLAMES@VLT radial velocities. In: Astronomy & Astrophysics, 2008, 609-620 |
| 2008 | S. Sharma, A.K. Pandey, K. Ogura, T. Aoki, K. Pandey, T.S. Sandhu and Ram Sagar: Mass functions and photometric binaries in nine open clusters. In: Astronomical Journal , 2008, 1934-1945 |
| 2008 | Himali Joshi, Brijesh Kumar, K.P. Singh, Ram Sagar, S. Sharma and J.C. Pandey: Multi-wavelength study of a young open cluster NGC 7419. In: Monthly Notices of Royal Astronomical Society, 2008, 1279-1300 |
| 2008 | R. Kaur, B. Paul, B. Kumar and Ram Sagar: Multiwavelength study of the transient X-ray binary IGR J01583+6713. In: Monthly Notices of Royal Astronomical Society, 2008, 2253-2261 |
| 2008 | B.J. Medhi, Maheswar G., J.C. Pandey, T.S. Kumar and Ram Sagar: Optical polarimetric study of open clusters: distribution of interstellar matter towards NGC 654. In: Monthly Notices of Royal Astronomical Society, 2008, 105-116 |
| 2008 | U.C. Dumka, K. Krishna Moorthy, P. Pant, P. Hegde, Ram Sagar and K. Pandey: Physical and optical characteristics of atmospheric aerosols during ICARB at manora Peak, Nainital: A sparsely in-habitant, high-altitude location in the Himalayas. In: Journal of Earth System Science, 2008, 399-405 |
| 2008 | U.C. Dumka, K. Krishna Moorthy, S.K. Satheesh, Ram Sagar and P. Pant: Short Period Modulations in Aerosol Optical Depths over the Central Himalayas: Role of Mesoscale Processes. In: Journal of Applied Meteorology & Climatology, 2008, 1467-1475 |
| 2007 | Ram Sagar: A modern 3.6 meter new technology optical telescope as a major national initiative in Astrophysics. In: National Academy Science Letters , 2007, 209-212 |
| 2007 | B.J. Medhi, Maheswar G., Brijesh Kumar, J.C. Pandey, T.S. Kumar and Ram Sagar: Broad Band Optical Polarimetric Study of IC 1805. In: Monthly Notices of Royal Astronomical Society, 2007, 881-887 |
| 2007 | C.M. Raiteri et al. including Ram Sagar: Prominent activity of the blazar OJ 287 in 2005. XMM-Newton and multi-wavelength observations. In: Memoires S. Italian Astron, 2007, 741-744 |
| 2007 | R. Kaur, B. Paul, H. Raichur and Ram Sagar: Quasi-Periodic Oscillations in XTE J0111.2-7317, Highest Frequency among the HMXB Pulsars. In: Astrophysical Journal, 2007, 1409-1412 |
| 2007 | S. Sharma, A.K. Pandey, D.K. Ojha, W.P. Chen, S.K. Ghosh, B.C. Bhatt, Maheswar, G., and Ram Sagar: Star formation in young star cluster NGC 1893. In: Monthly Notices of Royal Astronomical Society, 2007, 1141-1160 |
| 2007 | A.K. Pandey, S. Sharma, K. Upadhyay, K. Ogura, T.S. Sandhu, H. Mito, and Ram Sagar: Stellar Contents of Two Intermediate Age Clusters: NGC 1912 and NGC 1907. In: Publication of Astronomical Society of Japan, 2007, 547-558 |
| 2007 | A. Goyal, Gopal-Krishna, Ram Sagar, G.C. Anupama and D.K. Sahu: Further evidence for intra-night variability of radio-quiet quasars. In: Bulletin of Astronomical Society of India, 2007, 141-154 |
| 2007 | Wahab Uddin, B. Joshi, T.S. Kumar, S. Sharma and Ram Sagar: Observations of Total Solar Eclipse of 29 March 2006 and related atmospheric measurements. In: Current Science, 2007, 957-959 |
| 2007 | K. Misra, D. Bhattacharya, D.K. Sahu, Ram Sagar et al.: Optical observations of GRB 060124 afterglow: A case for an injection break. In: Astronomy & Astrophysics, 2007, 903-908 |
| 2007 | P. Hegde, P. Pant, M. Naja, U.C. Dumka and Ram Sagar: South Asian dust episode in June 2006: Aerosol observations in the central Himalayas. In: Geophysical Research Letters, 2007, L23802-1-L23802-5 |
| 2007 | A.J. Castro-Tirado et al. including Ram Sagar: The dark nature of GRB 051022 and its host galaxy. In: Astronomy & Astrophysics, 2007, 101-107 |
| 2007 | K. Misra, D. Pooley, P. Chandra, D. Bhattacharya, A.K. Ray, Ram Sagar and W.H.G. Lewin: Type IIP Supernova SN 2004et: A multi-wavelength Study in X-ray, Optical and Radio. In: Monthly Notices of Royal Astronomical Society, 2007, 280-292 |
| 2006 | P. Pant, P. Hegde, U.C. Dumka, Ram Sagar, S.K. Satheesh, K. Krishna Moorthy, A. Saha and M.K. Srivastava Aerosol characteristics at a high altitude location in central Himalayas: Optical properties and radiative forcing. In: Journal of Geophysical Research, 2006, D17206-1-D17206-9 |
| 2006 | P. Pant, P. Hegde, U.C. Dumka, A. Saha, M.K. Srivastava and Ram Sagar: Aerosol characteristics at a high-altitude location during the ISRO-GBP Land Campaign-II. In: Current Science, 2006, 1053-1061 |
| 2006 | Ram Sagar: Aryabhatta Research Institute of Observational Sciences : reincarnation of a 50 year old State Observatory of Nainital. In: Bulletin of Astronomical Society of India, 2006, 37-64 |
| 2006 | C.S. Stalin, Gopal-Krishna, Ram Sagar, Paul J. Wiita, V. Mohan and A.K. Pandey: Multiband optical monitoring of the blazars S5 0716+714 and BL Lacertae. In: Monthly Notices of Royal Astronomical Society, 2006, 1337-1345 |
| 2006 | S. Joshi, D.L. Mary, P. Martinez, D.W. Kurtz, V. Girish, S. Seetha, Ram Sagar and B.N. Ashoka: The Nainital-Cape Survey -- II: Report for pulsation in five chemically peculiar A-type stars and presentation of 140 null results. In: Astronomy & Astrophysics, 2006, 303-313 |
| 2006 | S. Sharma, A.K. Pandey, K. Ogura, H. Mito, K. Tarusawa and Ram Sagar: Wide Field CCD photometry around nine open clusters. In: Astronomical Journal, 2006, 1669-1691 |
| 2005 | K. Misra, A.K. Kamble, D. Bhattacharya and Ram Sagar: Multiband optical photometry and bolometric light curve of the Type Ia Supernova 2004S. In: Monthly Notices of Royal Astronomical Society, 2005, 662-668 |
| 2005 | Ram Sagar and K. Misra: Optical observations of GRB afterglows from India. In: Bulletin of Astronomical Society of India, 2005, 209-217 |
| 2005 | L. Resmi including Ram Sagar: Radio, Millimeter and Optical Monitoring of GRB 030329 Afterglow: Cons-training the Double Jet Model. In: Astronomy & Astrophysics, 2005, 477-486 |
| 2005 | S.K. Chakrabarti, B.G. Anandarao, S. Pal, S. Mondal, A. Nandi, A. Bhattacharyya, S. Mandal, Ram Sagar, J.C. Pandey, A. Pati and S.K. Saha: SS 433: Results of a recent multi-wavelength Campaign. In: Monthly Notices of Royal Astronomical Society, 2005, 957-965 |
| 2005 | J. C. Pandey, K. P. Singh, S. A. Drake and Ram Sagar: Unravelling the nature of HD 81032-- a new RS CVn Binary. In: Journal of Astrophysics & Astronomy, 2005, 359-376 |
| 2005 | Ram Sagar and D.L. Mary: Facilities at ARIES for the Nainital--Cape Survey. In: Journal of Astrophysics & Astronomy, 2005, 339-348 |
| 2005 | Y.C. Joshi, A.K. Pandey, D. Narasimha and Ram Sagar: First microlensing candidate towards M31 from Nainital Microlensing Survey. In: Astronomy & Astrophysics, 2005, 787-795 |
| 2005 | C.S. Stalin, Alok C. Gupta, Gopal-Krishna, Paul J. Wiita and Ram Sagar: Intranight optical variability of BL Lacs, radio-quiet quasars and radio-loud quasars. In: Monthly Notices of Royal Astronomical Society, 2005, 607-614 |
| 2005 | A. Subramaniam, D.K. Sahu, Ram Sagar and P. Vijitha: NGC 146: A young open cluster with a Herbig Be star and intermediate mass pre-main sequence stars. In: Astronomy & Astrophysics, 2005, 511-522 |
| 2005 | J. C. Pandey, K. P. Singh, S. A. Drake and Ram Sagar: Optical and X-ray studies of chromospherically active stars: FR Cancri, HD 95559 and LO Pegasi. In: Astronomical Journal, 2005, 1231-1246 |
| 2005 | Kuntal Misra, L. Resmi, S.B. Pandey, D. Bhattacharya and Ram Sagar: Optical observations and multi-band modelling of GRB 041006: Evidence of a hard electron energy spectrum. In: Bulletin of Astronomical Society of India, 2005, 487-497 |
| 2005 | A.K. Pandey, K. Upadhyay, K. Ogura, Ram Sagar, V. Mohan, H. Mito, H.C. Bhatt and B.C. Bhatt Stellar contents of two young open clusters: NGC 663 and NGC 654. In: Monthly Notices of Royal Astronomical Society, 2005, 1290-1308 |
| 2004 | Sneh Lata, V. Mohan, A.K. Pandey and Ram Sagar: CCD photometry of the unstudied galactic star clusters Be 10, Be 67 and To 5. In: Bulletin of Astronomical Society of India, 2004, 59-74 |
| 2004 | Ram Sagar, Brijesh Kumar, U.C. Dumka, K.K. Moorthy and P. Pant: Characteristics of Aerosol Spectral Optical Depths over Manora Peak -- A High Altitude Station in Central Himalayas. In: Journal of Geophysical Research , 2004, D06207-1-D06207-8 |
| 2004 | S.B. Pandey, Ram Sagar, G.C. Anupama, D. Bhattacharya, D.K. Sahu, A.J. Castro-Tirado and M. Bremer: Early optical and millimeter observations of GRB 030226 afterglow. In: Astronomy & Astrophysics, 2004, 919-924 |
| 2004 | Ram Sagar, C.S. Stalin, Gopal-Krishna and P.J. Wiita: Intranight optical variability of Blazars. In: Monthly Notices of Royal Astronomical Society, 2004, 176-186 |
| 2004 | C.S. Stalin, Gopal-Krishna,Ram Sagar and P.J. Wiita: Optical Variability Properties of High Luminosity AGN Classes. In: Journal of Astrophysics & Astronomy, 2004, 1-55 |
| 2004 | Y.C. Joshi, A.K. Pandey, D. Narasimha, Y. Giraud-Heraud, Ram Sagar and J. Kaplan: Photometric study of two novae in M31. In: Astronomy & Astrophysics, 2004, 471-476 |
| 2004 | R.K.S Yadav and Ram Sagar: A comprehensive CCD photometric study of the open cluster NGC 2421. In: Monthly Notices of Royal Astronomical Society, 2004, 667-675 |
| 2004 | Sneh Lata, V. Mohan and Ram Sagar: CCD photometry of the galactic star clusters Be 15, Be 71 and King 1. In: Bulletin of Astronomical Society of India, 2004, 371-383 |
| 2004 | C.S. Stalin, Gopal-Krishna, Ram Sagar and P.J. Wiita: Intranight optical variability of radio quiet and radio lobe dominated quasars . In: Monthly Notices of Royal Astronomical Society, 2004, 175-188 |
| 2004 | A.E. Piskunov, A.N. Belikov, N.V. Kharchenko, Ram Sagar and A. Subramaniam: On the determination of age and mass functions of stars in young Open star clusters from the analysis of their luminosity functions. In: Monthly Notices of Royal Astronomical Society, 2004, 1449-1463 |
| 2004 | Brijesh Kumar, Ram Sagar, B.B. Sanwal, and M. Bessel: On the highly reddened members in 6 young galactic star clusters -- a multi-wavelength study. In: Monthly Notices of Royal Astronomical Society, 2004, 991-1014 |
| 2004 | R.K.S Yadav and Ram Sagar: UBVRI CCD photometric study of the open clusters Basel 4 and NGC 7067. In: Monthly Notices of Royal Astronomical Society, 2004, 1481-1492 |
| 2003 | S.B. Pandey, G.C. Anupama, Ram Sagar, D. Bhattacharya, D.K. Sahu, and J.C. Pandey: A flattening in the optical light curve of SN 2002ap. In: Monthly Notices of Royal Astronomical Society, 2003, 375-380 |
| 2003 | Y.C. Joshi, A.K. Pandey, D. Narasimha, Ram Sagar and Y. Giraud-Heraud: Identification of 13 Cepheids and 333 Other Variables in M31. In: Astronomy & Astrophysics, 2003, 113-123 |
| 2003 | N. Masetti et al. including Ram Sagar: Optical and near-infrared observations of the GRB 020405 afterglow. In: Astronomy & Astrophysics, 2003, 465-481 |
| 2003 | T.S. Sandhu, A.K. Pandey and Ram Sagar: Photometric binary content in intermediate/old open clusters. In: Astronomy & Astrophysics, 2003, 515-522 |
| 2003 | Gopal-Krishna, C.S. Stalin, Ram Sagar and P.J. Wiita: Clear Evidence for Intranight Optical Variability in Radio-quiet Quasars . In: Astrophysical Journal Letters, 2003, L25-L28 |
| 2003 | S. Joshi, V. Girish, Ram Sagar, D.W. Kurtz, P. Martinez, B. Kumar, S. Seetha, B.N. Ashoka and A. Zhou: Discovery of unusual pulsations in the cool, evolved Am stars HD 98851 and HD 102480. In: Monthly Notices of Royal Astronomical Society, 2003, 431-438 |
| 2003 | A.J. Castro-Tirado including Ram Sagar: GRB 030227: the first multi-wavelength afterglow of an INTEGRAL GRB. In: Astronomy & Astrophysics Letters, 2003, L315-L319 |
| 2003 | S.B. Pandey, G.C. Anupama, Ram Sagar, D. Bhattacharya, A.J. Castro-Tirado, D.K. Sahu, Padmakar Parihar and T.P. Prabhu: Optical afterglow of the not so dark GRB 021211. In: Astronomy & Astrophysics Letters, 2003, L21-L24 |
| 2003 | S.B. Pandey, D.K. Sahu, L. Resmi, Ram Sagar et al.: Optical observations of the bright long duration peculiar GRB 021004 afterglow. In: Bulletin of Astronomical Society of India, 2003, 19-36 |
| 2003 | G. Gauba, M. Parthasarathy, Brijesh Kumar, R.K.S. Yadav and Ram Sagar: Photometry and low-resolution spectroscopy of hot post-AGB candidates. In: Astronomy & Astrophysics, 2003, 305-315 |
| 2003 | R.K.S Yadav and Ram Sagar: UBVRI CCD photometry of the OB associations Bochum 1 and Bochum 6. In: Bulletin of Astronomical Society of India, 2003, 87-100 |
| 2002 | Nilakshi and Ram Sagar: A comprehensive study of the rich open star cluster NGC 2099 based on deep BVI CCD observations. In: Astronomy & Astrophysics, 2002, 65-76 |
| 2002 | Nilakshi, Ram Sagar, A.K. Pandey and V. Mohan: A study of spatial structure of galactic open star clusters. In: Astronomy & Astrophysics, 2002, 153-162 |
| 2002 | S. Lata, A.K. Pandey, Ram Sagar and V. Mohan: Integrated photometric characteristics of galactic open star clusters. In: Astronomy & Astrophysics, 2002, 158-167 |
| 2002 | Ram Sagar: Observations of GRB afterglows from Nainital: Evidence in favour of jet model. In: Bulletin of Astronomical Society of India , 2002, 237-248 |
| 2002 | J. C. Pandey, K. P. Singh, Ram Sagar and S. A. Drake: Photometric Variability of Four Coronally Active Stars. In: Journal of Astrophysics & Astronomy, 2002, 9-14 |
| 2002 | R.K.S Yadav and Ram Sagar: A deep UBVRI CCD photometric study of the open clusters Tr 1and Be 11. In: Monthly Notices of Royal Astronomical Society, 2002, 133-146 |
| 2002 | H.C. Kandpal, D.S. Mehta, E.S.R. Gopal, J.S. Vaishya, B.B. Sanwal, M. Singh and Ram Sagar: Determining Field correlations produced by stars from the study of spectral changes in double slit experiment. In: Astrophysics & Space Science, 2002, 209-222 |
| 2002 | S. Seetha, B.N. Ashoka, S. Joshi, V. Girish, Ram Sagar, U.S. Chaubey and S.K. Gupta: New pulsating variables discovered from Naini Tal--Cape survey . In: Bulletin of Astronomical Society of India , 2002, 623-629 |
| 2002 | S. Chatterjee, Brijesh Kumar and Ram Sagar On mass and velocity distributions in members of star clusters: An analytical approach. In: Bulletin of Astronomical Society of India , 2002, 951-971 |
| 2001 | B.N. Ashoka, Kumar, V.C. Babu, S. Seetha, V. Girish, S.K. Gupta, Ram Sagar, S. Joshi and P. Narang Development of a Three Channel Photometer for UPSO, Naini Tal. In: Journal of Astrophysics & Astronomy, 2001, 131-144 |
| 2001 | A.K. Pandey, Nilakshi, K. Ogura, Ram Sagar and K. Tarusawa NGC 7654: An interesting cluster to study star formation history. In: Astronomy & Astrophysics , 2001, 504-522 |
| 2001 | R.K.S Yadav and Ram Sagar: Non-uniform extinction in young open star clusters. In: Monthly Notices of Royal Astronomical Society, 2001, 370-380 |
| 2001 | B.N. Naidu, R. Srinivasan, V. Mohan and Ram Sagar: Performance of the IIA Mosaic CCD Camera System. In: Bulletin of Astronomical Society of India, 2001, 545-561 |
| 2001 | Y.C. Joshi, A.K. Pandey, D. Narasimha and Ram Sagar: Search for micro-lensing events towards M31 Galaxy. In: Bulletin of Astronomical Society of India, 2001, 531-544 |
| 2001 | Ram Sagar, B.N. Naidu and V. Mohan: A deep VI CCD photometric study of the neglected galactic star cluster NGC 6631. In: Bulletin of Astronomical Society of India, 2001, 519-530 |
| 2001 | Ram Sagar, U. Munari, K. S. de Boer: A multicolour CCD photometric and mass function study of the distant southern open star clusters NGC 3105, NGC 3603, Melotte 105, Hogg 15, NGC 4815, Pismis 20 and NGC 6253. In: Mon. Not. R. Astron. Soc., 2001, 23-45 |
| 2001 | V. Girish, S. Seetha, P. Marzinez, S. Joshi, B. N. Ashoka, D. W. Kurtz, U. S. Chaubey, S. K. Gupta, Ram Sagar: A new northern hemisphere rOAp star. In: Astr. Astrophys., 2001, 142-147 |
| 2001 | T. Richtler, Ram Sagar: A study of the old galactic starcluster Berkeley 32. In: Bull. Astr. Soc. India, 2001, 53-70 |
| 2001 | Ram Sagar: Emission from GRBs and their afterglows: Indian observations. In: Bulletin of Astronomical Society of India, 2001, 215-229 |
| 2001 | Ram Sagar, S.B. Pandey, V. Mohan, D. Bhattacharya and A.J. Castro-Tirado: GRB 000926 and its optical afterglow: Another possible evidence for non-isotropic emission . In: Bulletin of Astronomical Society of India (Rapid Communication), 2001, 1-13 |
| 2001 | Ram Sagar, C. S. Stalin, D. Bhattacharya, S. B. Pandey, V. Mohan, A. J. Castro-Tirado, A. Pramesh Rao, S. A. Trushkin, N. A. Nizhelskij, M. Bremer, J. M. Castro Ceron: Optical and radio observations of the bright GRB 010222 afterglow: evidence for rapid synchrotron colling. In: Bull. Astr. Soc. India, 2001, 91-106 |
| 2001 | C. S. Stalin, Ram Sagar et al.: Seeing and microthermal measurements near Devasthal top. In: Bull Astr. Soc. India, 2001, 39-52 |
| 2001 | A.J. Castro--Tirado et al. including Ram Sagar: The Extraordinarily bright optical afterglow of GRB 991208 and its host galaxy . In: Astronomy Astrophysics , 2001, 398-406 |
| 2001 | P. Martinez, D.W. Kurtz, B.N. Ashoka, U.S. Chaubey, V. Girish, S.K. Gupta, S. Joshi, K. Kasturirangan, Ram Sagar and S. Seetha: The Nainital -- Cape survey for pulsations in chemically peculiar stars. In: Astronomy & Astrophysics , 2001, 1048-1055 |
| 2000 | Ram Sagar: Distribution of stellar mass in young clusters of our Galaxy and nearby galaxies. In: Bulletin of Astronomical Society of India, 2000, 55-62 |
| 2000 | Ram Sagar et al. Evaluation of Devasthal site for optical astronomical observations . In: Astronomy Astrophysics Suppl., 2000, 349-362 |
| 2000 | Ram Sagar, V. Mohan, S.B. Pandey, A.K. Pandey, C.S. Stalin and A.J. Castro-Tirado: GRB 000301C with peculiar afterglow emission . In: Bulletin of Astronomical Society of India (Rapid Communication), 2000, 499-513 |
| 2000 | Ram Sagar: Importance of small and moderate size optical telescopes. In: Current Science, 2000, 1076-1081 |
| 2000 | Gopal-Krishna, Alok C. Gupta, Ram Sagar, Paul J. Wiita, U. S. Chaubey and C. S. Stalin Rapid optical variability in radio-quiet QSOs. In: Monthly Notices of Royal Astronomical Society, 2000, 815-825 |
| 2000 | N. Masetti et al. including Ram Sagar: Unusually rapid variability of the GRB 000301C optical afterglow. In: Astronomy Astrophysics Letters, 2000, L23-L26 |
| 2000 | A.C. Gupta, A. Subramaniam, Ram Sagar and W.K. Griffiths A complete photometric study of the open cluster NGC 7790 containing Cepheid variables. In: Astronomy Astrophysics Suppl., 2000, 365-375 |
| 2000 | Ram Sagar: Another Indian optical observation of a Gamma-ray burst afterglow from UPSO, Nainital. In: Current Science (News), 2000, 539-540 |
| 2000 | Ram Sagar et al.: Site characterization for the UPSO-TIFR Telescope. In: Bulletin of Astronomical Society of India, 2000, 429-435 |
| 2000 | B. Kumar, Ram Sagar, B. S. Rautela, J. B. Srivastava and R. K. Srivastava: Sky transparency over Nainital: A retrospective study . In: Bulletin of Astronomical Society of India, 2000, 675-686 |
| 2000 | Ram Sagar, V. Mohan, A.K. Pandey, S.B. Pandey and A.J. Castro-Tirado: Temporal behaviour of emissions from $\gamma-$ray burts and optical/near-IR afterglows of GRB 991208 and GRB 991216 . In: Bulletin of Astronomical Society of India (Rapid Communication), 2000, 15-31 |
| 1999 | V. Mohan, W. Uddin, Ram Sagar and S.K. Gupta Atmospheric extinction at Devasthal, Nainital . In: Bulletin of Astronomical Society of India, 1999, 601-608 |
| 1999 | A.J. Castro--Tirado et al. including Ram Sagar: Decay of the GRB 990123 optical afterglow: implications for the fireball model. In: Science, 1999, 2069-2072 |
| 1999 | P. Martinez, D.W. Kurtz, B.N. Ashoka, U.S. Chaubey, S.K. Gupta, F. Leone, G. Catanzaro, Ram Sagar, E. Raj, S. Seetha and K. Kasturirangan: Discovery of pulsations in the Am star HD 13079. In: Monthly Notices of Royal Astronomical Society, 1999, 871-874 |
| 1999 | P. Pant, C.S. Stalin and Ram Sagar: Microthermal measurements of surface layer seeing at Devasthal-site. In: Astronomy Astrophysics Suppl., 1999, 19-25 |
| 1999 | A. Subramaniam and Ram Sagar: Multicolour deep CCD Photometry and Stellar evolutionary analysis of NGC 1907, NGC 1912, NGC 2383, NGC 2384 and NGC 6709 using synthetic colour-magnitude diagrams . In: Astronomical J., 1999, 937-961 |
| 1999 | Ram Sagar, A.K. Pandey, V. Mohan, R.K.S. Yadav, Nilakshi, D. Bhattacharya and A.J. Castro-Tirado: Optical follow up of the GRB 990123 source from UPSO, Nainital. In: Bulletin of Astronomical Society of India (Rapid Communication), 1999, 3-7 |
| 1999 | Ram Sagar: Some new initiatives in Optical Astronomy at UPSO, Naini Tal. In: Current Science, 1999, 643-652 |
| 1999 | Nilakshi, R.K.S. Yadav, V. Mohan, A.K. Pandey and Ram Sagar: BVRI CCD photometric standards in the field of GRB 990123 . In: Bulletin of Astronomical Society of India, 1999, 405-410 |
| 1999 | Ram Sagar: First Indian observation of the optical transient of a Gamma-ray burst. In: Current Science (News), 1999, 865-865 |
| 1999 | Ram Sagar, Gopal-Krishna, V. Mohan, A.K. Pandey, B.C. Bhatt and S.J. Wagner: Multi-colour optical monitoring of the intra-day variable Blazar S5 0716+714 . In: Astronomy Astrophysics Suppl., 1999, 453-461 |
| 1999 | T.J. Galama et al. including Ram Sagar: The effect of magnetic fields on gamma-ray bursts inferred from multi-wavelength observations of the burst of 23 January 1999 . In: Nature, 1999, 394-399 |
| 1999 | Ram Sagar, A. Subramaniam, T. Richtler and E.K. Grebel: V, I CCD photometry of metal-rich bulge globular clusters: NGC 6553. In: Astronomy Astrophysics Suppl., 1999, 391-401 |
| 1998 | T. Richtler, E.K .Grebel, A. Subramaniam and Ram Sagar: V, I CCD photometry of metal-rich globular clusters: NGC 6528. In: Astronomy Astrophysics Suppl., 1998, 167-179 |
| 1998 | H.C. Kandpal, A. Wasan, J.S. Vaishya, E.S.R. Gopal, M. Singh, B.B. Sanwal and Ram Sagar: Application of spatial-coherence spectroscopy for determining the angular diameters of stars: feasibility experiment. In: Indian Journal of Pure and Applied Physics , 1998, 665-674 |
| 1998 | Ram Sagar and W.K. Griffiths: BVI CCD Photometry of the distant open star clusters Berkeley 81, Berkeley 99, NGC 6603 and NGC 7044 . In: Monthly Notices of Royal Astronomical Society, 1998, 1-23 |
| 1998 | Ram Sagar and W.K.Griffiths: Mass function of five distant northern open star clusters. In: Monthly Notices of Royal Astronomical Society, 1998, 777-788 |
| 1998 | H.C. Bhatt, S.K. Jain and Ram Sagar: The Puppis OB III association: polarization measurements . In: Astronomy Astrophysics , 1998, 737-741 |
| 1997 | Ram Sagar and R.D. Cannon: Multicolour deep CCD Photometric study of the moderately young southern open star clusters NGC 3228, NGC 4103, NGC 5662 and NGC 6087. In: Astronomy Astrophysics Suppl., 1997, 9-29 |
| 1997 | Ram Sagar: The Ages of the Galactic Globular Clusters. In: Journal of Astrophysics & Astronomy, 1997, 295-301 |
| 1996 | S.K. Barman and Ram Sagar: Influence of a third body on the luminosity of a compact binary system. In: Bulletin of Astronomical Society of India, 1996, 47-58 |
| 1996 | Ram Sagar, Gopal-Krishna and P.J. Wiita: Intra night optical monitoring of optically selected bright quasars. In: Monthly Notices of Royal Astronomical Society, 1996, 1267-1276 |
| 1995 | D.C.V. Mallik, Ram Sagar and A.K. Pati: A deep BVI photometric study of the open cluster NGC 2453. In: Astronomy Astrophysics Suppl., 1995, 537-548 |
| 1995 | Gopal-Krishna, Ram Sagar and P.J. Wiita: Intra-night optical variability in optically selected QSOs. In: Monthly Notices of Royal Astronomical Society, 1995, 701-710 |
| 1995 | Ram Sagar and R.D. Cannon: A deep UBVRI CCD photometric study of the moderately young southern open star cluster NGC 4755. In: Astronomy Astrophysics Suppl., 1995, 75-84 |
| 1995 | A. Subramaniam, U. Gorti, Ram Sagar and H.C. Bhatt: Probable binary open star clusters in the Galaxy. In: Astronomy Astrophysics , 1995, 86-89 |
| 1995 | T.P. Prabhu et al. including Ram Sagar: SN 1993J in M81: optical photometry and spectrophotometry during the first two months . In: Astronomy Astrophysics , 1995, 403-412 |
| 1995 | Ram Sagar: Star clusters in the Magellanic Clouds. In: Bulletin of Astronomical Society of India, 1995, 433-441 |
| 1995 | A. Subramaniam and Ram Sagar: Young LMC star clusters as a test for stellar evolutionary models. In: Astronomy Astrophysics , 1995, 695-706 |
| 1994 | Z.Y. Qian and Ram Sagar: A near-infrared photometric study of the young Orion nebula star cluster NGC 1976. In: Monthly Notices of Royal Astronomical Society, 1994, 114-122 |
| 1994 | H.C. Bhatt, Ram Sagar et al.: SAO 75669: A late type giant behind the molecular cloud MBM 12. In: Astronomy & Astrophysics, 1994, 946-948 |
| 1994 | Ram Sagar and R.D. Cannon: UBVRI CCD photometry of the two southern galactic star clusters Berkeley 79 and Trumpler 11. In: Bulletin of Astronomical Society of India, 1994, 381-401 |
| 1993 | Gopal-Krishna, Ram Sagar and P.J. Wiita: A search for intra-night optical variability in radio quiet QSOs. In: Monthly Notices of Royal Astronomical Society, 1993, 693-699 |
| 1993 | Ram Sagar and Z.Y. Qian: Intracluster extinction in young open star clusters. In: Bulletin of Astronomical Society of India, 1993, 565-568 |
| 1993 | A. Subramaniam, Ram Sagar and H.C. Bhatt: Spatial distribution of stellar mass in the Large Magellanic Cloud star clusters. In: Astronomy & Astrophysics , 1993, 100-105 |
| 1993 | Ram Sagar: Star clusters in the Magellanic Clouds and their mass functions. In: Current Science, 1993, 293-300 |
| 1993 | Gopal-Krishna, Ram Sagar and P.J. Wiita: Testing the mechanisms for optical micro-variability of powerful Active Galactic Nuclei. In: Bulletin of Astronomical Society of India, 1993, 441-445 |
| 1992 | V. Mohan, A.K. Pandey, D.C. Paliwal, Ram Sagar and H.S. Mahra: CCD photometry of the galactic open star clusters-I. King 10. In: Bulletin of Astronomical Society of India, 1992, 303-318 |
| 1992 | H.C. Bhatt and Ram Sagar: Optical CCD imaging of some Herbig Ae/Be stars. In: Astronomy Astrophysics Suppl., 1992, 473-480 |
| 1992 | H.C. Bhatt and Ram Sagar: A possible scenario for the formation of the composite Large Magellanic Cloud star cluster NGC 2214. In: Bulletin of Astronomical Society of India, 1992, 271-277 |
| 1992 | A.K. Pandey, H.S. Mahra and Ram Sagar: Effect of mass segregation on mass function of young open clusters . In: Bulletin of Astronomical Society of India, 1992, 287-295 |
| 1991 | H.C. Bhatt and Ram Sagar: Emission line CCD imaging of the three southern Symbiotic stars. In: Journal of Astrophysics & Astronomy, 1991, 111-117 |
| 1991 | Ram Sagar and T. Richtler: Mass functions of five young Large Magellanic Cloud star clusters. In: Astronomy & Astrophysics , 1991, 324-339 |
| 1991 | Ram Sagar, T. Richtler and K.S. de Boer: BV CCD photometry of five young Large Magellanic Cloud star clusters. In: Astronomy Astrophysics Suppl., 1991, 387-436 |
| 1991 | Ram Sagar and W.K. Griffiths: CCD photometry of the distant young open cluster NGC 7510. In: Monthly Notices of Royal Astronomical Society , 1991, 683-691 |
| 1991 | Ram Sagar and R.M. Sharples: Fibre spectroscopy and BV CCD photometry of the southern open cluster NGC 3114. In: Astronomy Astrophysics Suppl., 1991, 47-62 |
| 1991 | Ram Sagar, T. Richtler and K.S. de Boer: Two distinct supergiant branches in the young Large Magellanic Cloud star cluster NGC 2214. In: Astronomy & Astrophysics Letters, 1991, L5-L8 |
| 1990 | Ram Sagar and Z.Y. Qian: Near-infrared photometric study of open star cluster IC 1805. In: Astrophys. J., 1990, 174-180 |
| 1990 | R. Surendiranath, N.K. Rao, Ram Sagar, J.S. Nathan and K.K. Ghosh: CCD Photometry in VRI Bands of the Galactic Cluster NGC 2818. In: Journal of Astrophysics & Astronomy, 1990, 151-166 |
| 1990 | R.D. Cannon, Ram Sagar and M.R.S. Hawkins: CCD photometry of the distant southern globular cluster NGC 5824. In: Monthly Notices of Royal Astronomical Society , 1990, 151-158 |
| 1990 | S.K. Jain, H.C. Bhatt and Ram Sagar: Measurements of linear polarization of some Herbig Ae/Be stars. In: Astronomy Astrophysics Suppl., 1990, 237-244 |
| 1990 | Ram Sagar, M.R.S. Hawkins and R.D. Cannon: The giant branch of the Fornax dwarf spheroidal galaxy. In: Monthly Notices of Royal Astronomical Society, 1990, 167-176 |
| 1990 | A.K. Pandey, H.S. Mahra and Ram Sagar: The young open star clusters; stability and structure. In: Astron. J., 1990, 617-621 |
| 1989 | Ram Sagar and A.K. Pandey: A bibliography of colour magnitude diagram studies of star clusters in the Magellanic Clouds. In: Astronomy Astrophysics Suppl., 1989, 407-422 |
| 1989 | Ram Sagar and H.C. Bhatt: Internal motions in the open star clusters NGC 654 and 6087. In: Bulletin of Astronomical Society of India, 1989, 1-5 |
| 1989 | Ram Sagar and H.C. Bhatt: Radial distribution of the integrated light and photometric colours in open star clusters. In: Journal of Astrophysics & Astronomy, 1989, 173-182 |
| 1989 | A.K. Pandey, B.C. Bhatt, H.S. Mahra and Ram Sagar: Integrated parameters of open star clusters. In: Monthly Notices of Royal Astronomical Society, 1989, 263-276 |
| 1989 | Ram Sagar and H.C. Bhatt: Internal kinematics of open star clusters. In: Monthly Notices of Royal Astronomical Society, 1989, 865-874 |
| 1989 | Ram Sagar and Z.Y. Qian: JHK photometric study of the variable interstellar extinction in the direction of open star cluster NGC 654. In: Monthly Notices of Royal Astronomical Society, 1989, 551-561 |
| 1989 | Ram Sagar and A.K. Pati: Photometric performance of the CCD detector at the Kavalur 102-cm reflector. In: Bulletin of Astronomical Society of India, 1989, 6-13 |
| 1988 | V. MOhan and Ram Sagar: Field star contamination in open star cluster NGC 2301. In: Bulletin of Astronomical Society of India, 1988, 159-181 |
| 1988 | Ram Sagar, V.I. Myakutin, A.E. Piskunov and O.B. Dluzhnevskaya: A study of spatial stellar mass distribution in some young open clusters. In: Monthly Notices of Royal Astronomical Society, 1988, 831-845 |