IIA Institutional Repository: Recent submissions

  • Notes for the Observer 
    Prabhu, T. P (Astronomical Society of India, 1983-09)
  • Optical identification of equatorial infrared catalogue number 1 sources previously identified with only AFGL sources 
    Iyengar, K. V. K; Tandon, S. N; Verma, R. P (Astronomical Society of India, 1983-09)
    We have identified, using Palomar Observatory Sky Survey (POSS) prints, the optical counterparts of six of the seven sources from the Equatorial Infrared Catalogue Number 1 (EIC-1) previously identified by Sweeney et al. ...
  • Spectrum of the recent supernova in NGC 4753 
    Prabhu, T. P (Astronomical Society of India, 1983-09)
    Low-resolution spectrograms of SN 1983 in the IO galaxy NGC 4753, obtained with the 102-cm Kavalur reflector, show it to be a typical type I supernova. The spectrum suggests that the supernova was about 20 days past maximum ...
  • Preliminary study of the Old open Cluster NGC 6192 
    Kilambi, G. C; FitzGerald, M. P (Astronomical Society of India, 1983-09)
    NGC 6192 is an old open cluster (of 6`.8 radius) with turn-off at about Mv = 2.2, corresponding to an age of 9 X 10/sup8/ yr. It has a mean colour excess of 0.26 plus or minus 0.08 (s.d., 11 stars) and a distance of 890 ...
  • Stellar Velocity Perturbations in colliding Galaxies II 
    Narasimhan, K. S. V. S; Alladin, S. M (Astronomical Society of India, 1983-09)
    An analytical relationship is obtained between the stellar velocity perturbations and the eccentricity of the galactic orbit, under the impulsive approximation, for a hyperbolic encounter between two spherical galaxies.
  • Origin of the Gravitational constant and its behaviour at very high energies 
    Sivaram, C (Astronomical Society of India, 1983-09)
  • Molecular Clouds: Cosmic distilleries 
    Churchwell, Ed (Astronomical Society of India, 1983-09)
  • Notes for the Observer 
    Prabhu, T. P (Astronomical Society of India, 1983-06)
  • On the Activation of a Quiescent Prominence 
    Verma, V. K (Astronomical Society of India, 1983-06)
    During the observations of a quiescent prominence of 1981 November 27, the prominence got activated and mass transfer to another active centre took place with an average velocity of 32 km s/sup-1/ along a looped path. The ...
  • The Occultation of BD - 19 4222 by Uranus on 1981 April 26 
    Mahra, H. S; Pandey, A. K; Joshi, U. C; Mohan, V (Astronomical Society of India, 1983-06)
    From the observations of the occultation of BD - 194222 by Uranus on 1981 April 26 the temperature profiles of the Uranian upper atmosphere have been obtained. The mean temperature of the upper atmosphere of Uranus in the ...
  • Stellar velocity perturbations in colliding galaxies I 
    Zafarullah, S. N; Narasimhan, K. S. V. S; Sastry, K. S (Astronomical Society of India, 1983-06)
    Expressions for the stellar velocity perturbations in colliding galaxies, valid for any distance of closest approach, are derived analytically under the impulsive approximation for spherical galaxies using a Newtonian ...
  • Photometric Observations of BW Vulpeculae 
    Singh, Mahendra; Joshi, S. C (Astronomical Society of India, 1983-06)
    Photometric observations of beta Cephei star BW Vul, secured on five nights, in B and V filters are given. A new ephemeris for the maxima of the five star and its rate of change of period has been derived.
  • The Neutron in Astrophysics 
    Sivaram, C (Astronomical Society of India, 1983-06)
  • Notes for the Observer 
    Prabhu, T. P (Astronomical Society of India, 1983-03)
  • Period study of the short period RS CVn type eclipsing binary UV Piscium 
    Vivekananda Rao, P; Sarma, M. B. K (Astronomical Society of India, 1983-03)
    The short period RS CVn type eclipsing binary UV Piscium was observed photoelectrically with standard U, B, V filters for three consecutive observing seasons during 1976-1979. A total of nine primary minima in each of V ...
  • Twisted surge of 1981 December 25 
    Verma, V. K (Astronomical Society of India, 1983-03)
    Photographic observations and the morphological behaviour of the surge prominence of importance class 1 recorded with the 0.7 A passband H-alpha filter on 1981 December 25 have been described. The surge was recorded both ...
  • Phase retardation of light due to scattering by interstellar nonspherical grains 
    Shah, Ghanshyam, A (Astronomical Society of India, 1983-03)
    The phase retardation by cylindrical grains composed of pure (index of refraction, m=1.33 - i0.0) and dirty (m = 1.33 - i0.05) ice materials has been investigated. It has been found that the resulting interstellar circular ...
  • On the temperature distribuiton along a solar flare loop 
    Narain, Udit (Astronomical Society of India, 1983-03)
    We have obtained expressions for temperature distribution along a solar flare in the presence of a source of continued heating in constant cross section and line dipole geometries under nonstatic conditions. The quantitative ...
  • Integrated photometric parameters of open and globuler clusters 
    Sagar, R; Joshi, U. C; Sinvhal, S. D (Astronomical Society of India, 1983-03)
    In this work we have discussed UBV parameters of 142 galactic clustes and 32 globular clusters. Comparison of the integrated parameters of galactic clusters with the theoretical ones confirms the validity of the basic ...
  • Double ribbon flare of 1981 October 19 
    Verma, V. K; Pande, M. C (Astronomical Society of India, 1983-03)
    Photographic observations with a 0.7 A passband H-alpha Halle filter and morphological description of the double ribbon flare which occured near Halle plage region 17926 on 1981 October 19 are described. Initially the flare ...

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