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  • Ramya, S; Prabhu, T. P; Sahu, D. K (Astronomical Society of India, 2012)
    Blue compact dwarf galaxies (BCDGs) are dwarfs undergoing current burst of star formation (SF). In our work, we determine the ages of the underlying old stellar population to be ∼4 Gyr that is dominating the mass of the ...
  • Ramya, S; Sahu, D. K; Prabhu, T. P (Blackwell Publishing, 2009-06)
    Two blue compact dwarf galaxies, Mkn 104 and I Zw 97, are studied photometrically and spectroscopically. Mkn 104 is found to contain three distinct bright star-forming regions, whereas I Zw 97 is found to contain three ...
  • Das, M; Ramya, S; Sengupta, C; Mishra, K (Astronomical Society of India, 2012)
    We present radio and follow-up optical observations of a sample of bulgeless late type spiral galaxies. We searched for signs of nuclear activity and disk star formation in the sample galaxies. Interaction induced star ...
  • Mousumi Das; Sengupta, C; Ramya, S; Misra, K (Wiley-Blackwell, 2012-07)
    We present Giant Meterwave Radio Telescope 1280-MHz radio continuum observations and follow-up optical studies of the disc and nuclear star formation in a sample of low-luminosity bulgeless galaxies. The main aim is to ...
  • Mayya, Y. Divakara (Astronomical Society of the Pacific, 1994-04)
    Star formation properties in Giant Extragalactic H II Regions (GEHRs) are investigated using optical photometry and evolutionary population synthesis models. Photometric data in $BVR$ bands and in the emission line of ...
  • Divakara Mayya, Y (Indian Institute of Astrophysics, Bangalore, 1993-02)
  • Mayya, Y. D (Astronomical Society of India, 1993)
    Star formation properties in Giant Extragalactic H II Regions (GE-Hrs) are investigated using the optical photometry and evolutionary population synthesis models. We find it necessary to have differential extinction between ...
  • Bhatt, H. C (Astronomical Society of India, 1999)
    The observed mass spectra for stars and interstellar clouds are discussed. Stars are born from clouds, but their mass spectra are fundamentally different. A new model is proposed in which the Salpeter function representing ...
  • Nandi, Payel; Stalin, C. S; Saikia, D. J; Muneer, S; Mountrichas, George; Wylezalek, D; Sagar, R; Patig, M. K (American Astronomical Society, 2023-06-20)
    We present a detailed multiwavelength study of star formation in the dwarf galaxy NGC 4395, which hosts an active galactic nucleus (AGN). From our observations with the Ultra-Violet Imaging Telescope, we have compiled a ...
  • Subramaniam, A; Mathew, B; Sreeja S. K (Astronomical Society of India, 2006-12)
    NGC 225 is believed to be a 120 Myr old open cluster located at tilda 650 pc. Eight stars with H alphaemission are found to be located around the cluster, of which two are probable Herbig Be stars, indicating a very young ...
  • Sharma, S; Pandey, A. K; Ojha, D. K; Chen, W. P; Ghosh, S. K; Bhatt, B. C; Maheswar, G; Sagar, R (International Astronomical Union, 2008-05)
    We have carried out a multi-wavelength study of the star forming region NGC 1893 to make a comprehensive exploration of the effects of massive stars on low mass star formation. Using deep optical U BV RI broad band, Hα ...
  • Sharma, S; Pandey, A. K; Ojha, D. K; Chen, W. P; Ghosh, S. K; Bhatt, B. C; Maheswar, G; Sagar, R (Blackwell Publishing, 2007-09)
    We present a comprehensive multiwavelength study of the star-forming region NGC 1893 to explore the effects of massive stars on low-mass star formation. Using near-infrared colours, slitless spectroscopy and narrow-band ...
  • Ghosh, S. K (Astronomical Society of India, 2005-06)
    Studies of Galactic star forming regions being carried out at TIFR, is summarized. The techniques and typical results from these studies have been described brie y, which include: the balloon borne far infrared mapping in ...
  • Manoj, Puravankara (Indian Institute of Astrophysics, 2004-02)
  • Jain, S. K; Srinivasulu, G (SPIE, 1991-10)
    The authors have developed a star-and-sky chopping polarimeter for accurate measurements of linear polarization of starlight in the standard astronomical photometric U, B, V, R, and I bands. The instrumental polarization, ...
  • Sagar, R (Indian Academy of Sciences, 1993-03-10)
  • Moffett, A. J; Phillipps, S; Robotham, A.S.G; Driver, S.P; Bremer, M.N; Cortese, L; Ivy Wong, O; Brough, S; Brown, Michael J. I; Bryant, Julia J; Conselice, Christopher J; Croom, Scott M; George, K; Goldstein, Greg; Goodwin, Michael; Holwerda, B.W; Hopkins, A.M; Konstantopoulos, I. S; Lawrence, J.S; Lorente, N.P.F; Medling, A. M; Owers, M.S; Pimbblet, K. A; Richards, S.N; Sweet, S. M; Van de Sande, J (Oxford University Press on behalf of the Royal Astronomical Society, 2019-08-12)
    The Galaxy And Mass Assembly (GAMA) survey has morphologically identified a class of ‘Little Blue Spheroid’ (LBS) galaxies whose relationship to other classes of galaxies we now examine in detail. Considering a sample of ...
  • Guo, Zhen; Herczeg, Gregory J; Jose, J; Fu, Jianning; Chiang, Po-Shih; Grankin, Konstantin; Michel, R; Yadav, Ram Kesh; Liu, Jinzhong; Chen, Wen-Ping; Li, Gang; Xue, Huifang; Niu, Hubiao; Subramaniam, A; Sharma, Saurabh; Prasert, Nikom; Flores-Fajardo, Nahiely; Castro, Angel; Altamirano, Liliana (IOP Publishing, 2018-01)
    The variability of young stellar objects is mostly driven by star – disk interactions. In long-term photometric monitoring of the accreting T Tauri star GI Tau, we detect extinction events with typical depths ...
  • Jog, Chanda J (Astronomical Society of India, 1993)
    Starburst galaxies are characterized by a very high central infrared luminosity of about 10/sup10/ - 10/sup12/ solar luminosity. This luminosity is attributed to a burst of formation of massive stars. The stellar radiation ...
  • Mousumi Das; Jog, C. J (Astronomical Society of India, 1993)
    We present a triggering mechanism for starbursts in the central regions of interacting galaxies. As a disk giant molecular cloud (GMC) falls into the central region of a galaxy following a galaxy encounter, it may be ...

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