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Browsing Publications of Astronomical Society of India by Title

Browsing Publications of Astronomical Society of India by Title

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  • Chemical evolution of intermediate mass nuclei in the solar neighbourhood and the halo of the galaxy 
    Goswami, A; Prantzos, N (Astronomical Society of India, 2000)
    Recent observations of Fe group elements in very low metallicity stars show an evolutionary trend very different from that of Fe, implying divergent paths of chemical evolution for these elements. In the present work we ...
  • Chemical evolution of the solar neighbourhood 
    Rana, N. C (Astronomical Society of India, 1992)
    The study presents a simple model of the chemical evolution of the solar neighborhood with reference to the evolution and frequency distribution of a particular element - iron. The history of star formation in the solar ...
  • Circumstellar environment around young stars in nearby OB associations 
    Manoj, P; Maheswar, G; Bhatt, H. C (Astronomical Society of India, 2002-09)
    We study the circumstellar environment around intermediate mass young stars in nearby OB associations of different ages. We find that a significant fraction of stars in these associations ha.ve cool circumstellar ...
  • Classes 
    Meikle, J. J (Astronomical Society of India, 1912-02)
  • Classification of colliding galaxies 
    Narasimhan, K. S. V. S; Sastry, K. S; Alladin, S. M (Astronomical Society of India, 1996)
    we propose a classification scheme for colliding galaxies based on the fractional changes in their binding energy and the orbital energy. We give examples of actual observed pairs of interacting galaxies for the various ...
  • Classification of colliding galaxies - II 
    Narasimhan, K. S. V. S; Alladin, S. M; Sastry, K. S (Astronomical Society of India, 2000)
    In our Paper I we had classified galaxies in increasing order of the intensity of tidal effects on the basis of transfer of energy from the motion of galaxies to the internal motions. This work has been refined by presenting ...
  • Classification of M-Type Stars from Spectral Scans 
    Rautela, B. S; Joshi, S. C (Astronomical Society of India, 1979-06)
    Continuous spectral scans of 64 M-Type stars in the wavelength region 400-750 nm have been obtained with a bandwidth of 5 nm. The scans have been placed on an absolute energy scale. In this paper we discuss three classification ...
  • Classification of ultraviolet stellar spectra using artificial neural networks 
    Gulati, R. K; Gupta, R; Gothoskar, P; Khobragade, S (Astronomical Society of India, 1996)
    Scheme based on the artificial neural networks (ANNs) trained with multi-layer back propagation using single level network for classifying ultraviolet spectra in the IUE Low-Dispersion Spectra Reference Atlas is presented. ...
  • The climate of the planet Mars 
    Ridsdale, A. C (Astronomical Society of India, 1916)
  • Close binaries - Abundances and mass loss 
    Parthasarathy, M (Astronomical Society of India, 1990)
    The abundances and mass loss aspects of close binary systems are discussed. Emphasis is given to Algol systems, including V453 Sco, V 356 Sgr, RY Scuti, and W Serpentis. Hydrogen-poor close binary systems, symbiotic stars, ...
  • Close binary stars with moderate size optical telescope 
    Chaubey, U. S (Astronomical Society of India, 1998)
  • CN and C2 in Hyakutake (C/1996 B2) 
    Rautela, B. S; Joshi, G. C; Srivastava, J. B (Astronomical Society of India, 1998)
  • CN and C2 molecules in the coma of comet C/1995 O 1 Hale-Bopp 
    Sanwal, B. B; Singh, M (Astronomical Society of India, 1999)
    The spectrophotometric observations of the Comet C/1995 O1 Hale-Bopp were taken through 104 cm telescope of the U.P. State Observatory, Naini Tal using EG & G Spectrograph coupled with an Optical Multi Channel Analyser and ...
  • The collapse of voids in a Roberston-Walker universe with nonzero spatial curvature 
    Ray, M. K; Chaudhuri, S; Banerji, S (Astronomical Society of India, 2000)
    We consider the model of a spherical void (or its precursor) with heat conducting perfect fluid in Region I with Maiti metric (1982) surrounded by a spherical shell filled with radiation (Region II) having Vaidya metric. ...
  • Collapsing void in an expanding universe 
    Mandal, D. R; Banerji, S (Astronomical Soceity of India, 1996)
    We consider here the model of a spherical void in an expanding Robertson - Walker (RW) universe with flat space sections. The void is taken as a sphere of low density conducting perfect fluid (Region I) surrounded by a ...
  • Comet West (1975n) 
    Krishna Swamy, K. S (Astronomical Society of India, 1976-03)
  • Comets 
    Mitchell, J (Astronomical Society of India, 1915)
  • Comets 
    Sivaraman, K. R (Astronomical Society of India, 1973-12)
  • The Coming of Night 
    Brown, Muriel A. E (Astronomical Society of India, 1915)
  • The Coming Total Solar Eclipse and the Amateur Astronomer 
    Chiplonkar, M. W (Astronomical Society of India, 1979-09)
    Details of a total solar eclipse, with special reference to the forthcoming Februrary 16, 1980 eclipse, has been given, along with how an amateur astronomer can best utilize this opportunity.

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