Publications of Astronomical Society of India: Recent submissions

  • Spectroscopic binary orbits and MK morphological studies of some AM stars 
    Sreedhar Rao, S (Astronomical Society of India, 1993)
    The metallic-line A type stars (Am) on the main sequence are known to be largely the members of binary systems and therefore yield periods. Due to their small equatorial radial velocities, they display sharp spectral lines ...
  • High resolution interferometry of astrophysical objects 
    Raju, K. P (Astronomical Society of India, 1993)
    The thesis comprises studies on two distinctly diverse astrophysical situations; one on the outer envelope of a late-type star at its main sequence stage (solar corona), the other on the ionized cloud surrounding an ...
  • Limits on magnetic fields that produce sunspots 
    D'Silva, S (Astronomical Society of India, 1993)
  • Star formation in giant extragalactic H II regions 
    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 ...
  • Study of inhomogeneities in the solar atmosphere 
    Kariyappa, R (Astronomical Society of India, 1993)
  • A study of planetary nebulae 
    Surendiranath, R (Astronomical Society of India, 1993)
  • The spatial and temporal evolution of gas and heavy elements in the galaxy 
    Basu, S (Astronomical Society of India, 1993)
  • X-ray studies of Be/X-ray binaries 
    Saraswat, P (Astronomical Society of India, 1993)
  • CCD imaging camera and CCD based guiding system at the 1 meter UPSO telescope 
    Sanwal, B. B (Astronomical Society of India, 1993)
    Two CCD imaging camera systems acquired from Photometrics USA have been installed at the Cassegrain focus of 1 meter Uttar Pradesh State Observatory (UPSO) telescope. A 384 x 576 pixels Thomson CCD based camera system has ...
  • Pulsar work with the upgraded Ooty radio telescope 
    Vivekanand, M (Astronomical Society of India, 1993)
    In 1992 Ooty Radio Telescope (ORT) was fitted with a pre-amplifier for each of its 1056 dipoles; this enhanced its sensitivity by at least a factor of three. A digital hardware was installed for setting ORT's declination ...
  • The RRI 10.4m millimeter-wave telescope 
    Sridharan, T. K (Astronomical Society of India, 1993)
    The 10.4m millimeter-wave telescope of the Raman Research Institute (RRI) has been in operation since 1988. It can observe over the 3-mm atmospheric transmission window (80-115 GHz) where rotational transitions of many ...
  • New generation optical telescopes and plans for a large optical telescope in India 
    Tandon, S. N (Astronomical Society of India, 1993)
    The large optical telescopes which are being made now or are under planning differ from the older telescopes in many basic features: the primary mirrors are faster (f/2 or so) and much lighter, the altitude-azimuth mounting ...
  • Present status of very high energy gamma ray astronomy and plans for an imaging gamma ray telescope in India 
    Bhat, C. L (Astronomical Society of India, 1993)
    The unequivocal detection of the Crab Nebula as the first-ever standard candle in the very high energy (VHE) bracket, made possible by the recently-developed Cerenkov Imaging Technique, marks a water-shed in the 20 year-old ...
  • Present status of hard X-ray astronomy 
    Rao, A. R (Astronomical Society of India, 1993)
    The recent observational results obtained in the energy range of 15-150 keV from balloon and satellite borne instruments are reviewed. The detection of cyclotron line features in several X-ray binaries, hard X-ray spectra ...
  • X-ray structure of clusters of galaxies with ROSAT 
    Singh, K. P (Astronomical Society of India, 1993)
    X-ray emission from clusters of galaxies is due to thermal Bremsstrahlung from a hot thin gas in the intergalactic medium. The gas is generally considered to be smoothly distributed with a size of approximately 3 Mpc. X-ray ...
  • High resolution mapping in the far-infrared band 
    Rengarajan, T. N (Astronomical Society of India, 1993)
    The earth's atmosphere is opaque to the far-infrared (far-IR) radiation) and hence observations have to be carried out at altitudes above 12 km using telescopes transported by aircraft, balloon or satellite. The restriction ...
  • Imaging studies in the near infrared region 
    Anandarao, B. G (Astronomical Society of India, 1993)
    The advent of array detectors has given a tremendous boost to the detection capabilities in the near infrared region over the last 5 years. A variety of instrumentation has been and is being built around these panoramic ...
  • Stellar astronomy with VBT 
    Kameswara Rao, N (Astronomical Society of India, 1993)
    The 2.34 meter Vainu Bappu Telescope (VBT) has been operating as a national facility for the last 3-4 years. Some of the current observational programs with VBT regarding the galactic astronomy are reviewed
  • Spectroscopy of novae and supernovae 
    Prabhu, T. P (Astronomical Society of India, 1993)
    Many novae have been studied spectroscopically since 1975 and many supernovae since 1980 using the telescopes at Vainu Bappu Observatory (VBO). The program on novae has intensified since 1985, and that on supernovae has ...
  • Recent development in optical and IR polarimetry 
    Joshi, U. C (Astronomical Society of India, 1993)
    Polarimetry in recent years has matured and high precision measurements, from radio to UV wavelength, are possible in various modes: photo polarimetry, spectropolarimetry or imaging polarimetry. Within the country polarization ...

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