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Browsing by Subject "Stars"

Browsing by Subject "Stars"

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  • A high-resolution spectral analysis of three carbon-enhanced metal-poor stars 
    Goswami, A; Aoki, W; Beers, T. C; Christlieb, N; Norris, J. E; Ryan, S. G; Tsangarides, S (Blackwell Publishing, 2006-09)
    We present results of an analysis of high-resolution spectra obtained with the Subaru Telescope High Dispersion Spectrograph, of two Carbon-Enhanced Metal-Poor stars, HE 1305+0007 and HE 1152-0355, and of the classical CH ...
  • Hot post-AGB stars 
    Parthasarathy, M; Gauba, G; Fujii, T; Nakada, Y (Kluwer Academic Publishers, 2001-08)
    From the study of IRAS sources with far-IR colors similar to planetary nebulae (PNe), several proto-planetary nebulae with hot (OB) post-AGB central stars have been detected. These stars form an evolutionary link between ...
  • i-Process nucleosynthesis: Observational evidences from CEMP stars 
    Goswami, P. P; Goswami, A (Indian Academy of Sciences, 2020-12)
    The surface chemical compositions of a large fraction of carbon-enhanced metal-poor (CEMP) stars, the so-called CEMP-r/s stars, are known to exhibit enhancement of both s-process and r-process elements. For these stars, ...
  • Identifying Li-rich giants from low-resolution spectroscopic survey 
    Bharat Kumar, Y; Reddy, B. E; Zhao, G (Indian Academy of Sciences, 2018-04)
    In this paper we discuss our choice of a large unbiased sample used for the survey of red giant branch stars for finding Li-rich K giants, and the method used for identifying Li-rich candidates using low-resolution spectra. ...
  • Infrared studies of circumstellar matter of evolved stars 
    Anandarao, B. G (Astronomical Society of India, 1999)
  • Interpretation of angular diameter measurements of Mira variables: role of water 
    Tej, A; Lancon, A; Scholz, M (Astronomical Society of India, 2005-06)
    For stars with atmospheres as complex as those of Miras, determination of fundamental stellar parameters remains a challenge. Occurrence of water "shells" and their implication on the interpretation of the angular diameter ...
  • Investigations of Hydrogen Deficient Stars and Related Objects 
    Pandey, G (Indian Institute of Astrophysics, Bangalore, 1999-09)
  • ISOGAL: A deep survey of the obscured inner Milky Way with ISO at 7 mu m and 15 mu m and with DENIS in the near-infrared 
    Omont, A; Gilmore, G. F; Alard, C; Aracil, B; August, T; Baliyan, K; Beaulieu, S; Begon, S; Bertou, X; Blommaert, J. A. D. L; Borsenberger, J; Burgdorf, M; Caillaud, B; Cesarsky, C; Chitre, A; Copet, E; de Batz, B; Egan, M. P; Egret, D; Epchtein, N; Felli, M; Fouque, P; Ganesh, S; Genzel, R; Glass, I. S; Gredel, R; Groenewegen, M. A. T; Guglielmo, F; Habing, H. J; Hennebelle, P; Jiang, B; Joshi, U. C; Kimeswenger, S; Messineo, M; Miville-Deschenes, M. A; Moneti, A; Morris, M; Ojha, D. K; Ortiz, R; Ott, S; Parthasarathy, M; Perault, M; Price, S. D; Robin, A. C; Schultheis, M; Schuller, F; Simon, G; Soive, A; Testi, L; Teyssier, D; Tiphene, D; Unavane, M; van Loon, J. T; Wyse, R (EDP Sciences, 2003-06)
    The ISOGAL project is an infrared survey of specific regions sampling the Galactic Plane selected to provide information on Galactic structure, stellar populations, stellar mass-loss and the recent star formation history ...
  • Kinematics of Pulsar Beams 
    Kapoor, R. C; Shukre, C. S (The American Astronomical Society, 1998-07)
    We have investigated in detail the geometry of the open magnetic field line structure of an oblique dipole rotator, with a view to attaining a better understanding of the geometry of pulsar beams in the polar cap model of ...
  • Lithium in Stars on the Main Sequence and Beyond 
    Mallik, S. G. V (Astronomical Society of India, 2003)
    7Li provides a rare constraint on the baryonic density of the Universe and because of its fragile nature, it is also an excellent diagnostic of the physical processes occurring inside stars. The study of Li in Pop.I stars ...
  • Metric-affine effects in crystallization processes of white dwarfs 
    Kalita, Surajit; Sarmah, Lupamudra; Wojnar, Aneta (2023-02-15)
    We analyze the effects of modified gravity on specific heats of electrons and ions, Debye temperature, crystallization process, and cooling mechanism in white dwarfs. We derive the Lane-Emden-Chandrasekhar equation and ...
  • The motions of the Stars 
    Tomkins, H. G (Astronomical Society of India, 1911-02)
  • Near Infrared Photometry of Some Stars 
    Kulkarni, P. V; Ananth, A. G; Sinvhal, S. D; Joshi, S. C (Astronomical Society of India, 1977-06)
  • NIR properties of Be stars in star clusters in the Magellanic Clouds 
    Paul, K. T; Subramaniam, A; Mathew, B; Shruthi, S. B (Elsevier B.V, 2017-10)
    Magellanic Clouds are the nearby galaxies which are ideal to study the properties of metal poor stellar population. In this study, we explore the near-IR properties of optically identified classical Be stars in 19 star ...
  • Note on "a new apparatus for measuring the heat of the stars" 
    Ridsdale, A. C (Astronomical Society of India, 1916)
  • Note on the triplicity of v Scorpii 
    Jacob, W. S (Royal Astronomical Society, 1859-07)
  • On internal heat production in exo-planets, fission triggered stars, etc.! 
    Sivaram, C; Arun, K (Indian Academy of Sciences, 2009-08-10)
  • On the electric circuit approach of coronal heating: a review 
    Narain, U; Kumar, S (Astronomical Society of India, 1993-06)
    It is now widely believed that the photosphere of the Sun and its outer atmosphere (chromosphere and corona) are electrodynamically coupled through interconnecting magnetic fields. A similar situation may exist in other ...
  • On the projection of stars on the disk of the Moon 
    Jacob, W. S (Royal Astronomical Society, 1856-11)
  • The outburst and nature of young eruptive low mass stars in dark clouds 
    Ninan, J. P; Ojha, D. K; Bhatt, B. C; Mallick, K. K; Tej, A; Sahu, D. K; Ghosh, S. K; Mohan, V (Astronomical Society of India, 2012)
    The FU Orionis (FUor) or EX Orionis (EXor) phenomenon has attracted increasing attention in recent years and is now accepted as a crucial element in the early evolution of low-mass stars. FUor and EXor eruptions of young ...

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