Publications of Astronomical Society of India: Recent submissions

  • Starburst galaxies -- AGN connection: Theoretical scenario 
    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 ...
  • Cosmic gamma ray bursts -- recent developments 
    Vahia, M. N (Astronomical Society of India, 1993)
    The Gamma Ray Bursts (GRB) have been observed for the last 20 years by a large number of satellites. However, till recently, comprehensive analysis was difficult in view of varying techniques used by different satellites. ...
  • A double-pass spectrograph for solar research 
    Kariyappa, R; Jayarajan, A. P; Raheem, K. C. A; Sivaraman, K. R (Astronomical Society of India, 1993-06)
    We have described the double-pass spectrograph built at the Indian Institute of Astrophysics. Measurements of the scattered light within the spectrograph using the photoelectric scans of the NaI D-lines show that this is ...
  • Isolated pairs of spiral galaxies--a statistical study of far infrared and microwave characteristics 
    Venugopal, V. R; Narasimhan, K. S. V. S (Astronomical Society of India, 1993-06)
    A statistical study of the far infrared and microwave (lambda 6.3 cm ) lumnosities of a sample of isolated pairs of spiral galaxies and a comparison sample on non-interacting galaxies selected from the lists given by ...
  • Mass extinction due to oscillation of Sun about the mid-galactic plane 
    Das, C; Rana, N. C (Astronomical Society of India, 1993-06)
    Apparent periodicity was observed in the mass extinction event for the past few hundred million years. Previous investigations suggested the observed period to be somewhat lower than the calculated period of oscillation ...
  • Halpha, microwave and hard X-ray observations of the two-ribbon flare of 1980 April 3 
    Jain, R (Astronomical Society of India, 1993-06)
    The Halpha observations of a class 2B two ribbon flare, associated with exceptional hard X-ray and microwave emissions, are presented and discussed. The observational relationship suggests that the gradient of the magnetic ...
  • 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 ...
  • Astronomical orientations of the megalithic stone circles of Brahmagiri 
    Kameswara Rao, N (Astronomical Society of India, 1993-03)
    The megalithic stone circles at Brahmagiri which have been dated as 900 BC show clear astronomical orientations. The site lines from the center of a circle to an outer tangent of another circle points out to the directions ...
  • A note on the spectra of epsilon Aurigae 
    Subrahmanyam, P. V; Raghavender Rao, C; Sreedhar Rao, S (Astronomical Society of India, 1993-03)
    Spectroscopic observations of the long period variable epsilon Aurigae were made during its 1982-84 eclipse. It is found that the Ca II H and K lines show variation in their equivalent widths. The equivalent widths of these ...
  • Dwarf cepheid AD CMi -- revisited 
    Kilambi, G. C; Rahman, A (Astronomical Society of India, 1993-03)
    An analysis of UBVR light variations of AD Canis Minoris (CMi) is presented. The mean effective temperature derived from the intrinsic (B - V) index is estimated to be 7400 K +/- 100 K whereas that of the (V - R) index ...
  • CCD photometry of galactic open star clusters -- 2: NGC 7419 
    Bhatt, B. C; Pandey, A. K; Mohan, V; Mahra, H. S; Paliwal, D. C (Astronomical Society of India, 1993-03)
    CCD photometric observations of open cluster NGC 7419 in UBVRI passbands have been made down to V = 19.5 mag. Reddening across the cluster region is found to be variable. The mean visual absorption of 5.30 mag and a distance ...
  • Temperature and brightness distribution in the components of binary systems 
    Barman, S. K (Astronomical Society of India, 1993-03)
    From the theoretical model of a binary system for gravity darkening (Barman 1991), the temperature and brightness distributions along the surface of the components have been calculated using the third and fourth orders of ...
  • N-body problem 
    Bhatnagar, K. B; Saha, L. M (Astronomical Society of India, 1993-03)
    This is a review article on the N-body problem. The development of the qualitative methods regarding the various topics of Celestial Mechanics are presented in a systematic way starting from the early researches of the ...
  • Automation of dome rotation at 2.34m Vainu Bappu Telescope 
    Chinnappan, V; Faseehana (Astronomical Society of India, 1992)
  • The design and installation of the secondary mirror motor control for 2.34m Vainu Bappu Telescope 
    Chinnappan, V (Astronomical Society of India, 1992)
  • Facility: Vainu Bappu Telescope 
    Bhattacharyya, J. C; Rajan, K. T (Astronomical Society of India, 1992)
  • CCD photometry of the galactic open star clusters. I - King 10 
    Mohan, V; Pandey, A. K; Paliwal, D. C; Sagar, R; Mahra, H. S (Astronomical Society of India, 1992)
    CCD photometry of the open cluster King 10 has been carried out in the UBVRI photometric passbands down to V of about 19.5 mag. The reddening for the cluster region is found to be variable. A distance of 3.2 kpc has been ...
  • Production rate of H2O molecules as indicator of the surface temperature of cometary nucleus 
    Saxena, P. P; Misra, A (Astronomical Society of India, 1992)
    The technique outlined by Feynman (1963) to compute the number of molecules evaporating from a liquid surface has been extended to compute the sublimation rate of H2O molecules from the surface of a cometary nucleus and ...
  • Effect of mass segregation on mass function of young open clusters 
    Pandey, A. K; Mahra, H. S; Sagar, R (Astronomical Society of India, 1992)
    The effect of mass segregation on cluster mass function has been studied and it is found that the slope of the mass function is steeper in the outer part of the open clusters. Since derived dynamical relaxation time is ...
  • On the solar abundance of iron 
    Sinha, K; Sanwal, B. B (Astronomical Society of India, 1992)
    The MACKKL photospheric model and the latest oscillator strengths are used to obtain a solar abundance of iron close to the meteoritic value N(Fe) = 7.51 +/- 0.01. This helps to eliminate the discrepancy between photospheric ...

Search DSpace


Browse

My Account