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Browsing Publications of Astronomical Society of India by Author "Anupama, G. C"

Browsing Publications of Astronomical Society of India by Author "Anupama, G. C"

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  • The 2002 Outburst of the Recurrent Nova IM Normae 
    Anupama, G. C (Astronomical Society of India, 2003)
  • Cataclysmic variables: interclass connections 
    Anupama, G. C (Astronomical Society of India, 1996)
    The observational properties of the subclasses of the Cataclysmic Variables; classical and recurrent novae, dwarf novae, intermediate polars and the polars are described here. An interclass connection based on the properties ...
  • Fourier smoothing of digital photographic spectra 
    Anupama, G. C (Astronomical Society of India, 1990-03)
    Fourier methods of smoothing one-dimensional data are discussed with particular reference to digital photographic spectra. Data smoothed using lowpass filters with different cut-off frequencies are intercompared. A method ...
  • Further evidence for intra-night optical variability of radio-quiet quasars 
    Goyal, Arti; Gopal-Krishna; Sagar, R; Anupama, G. C; Sahu, D. K (Astronomical Society of India, 2007-06)
    Although well established for BL Lac objects and radio-loud quasars, the occurrence of intra-night optical variability (INOV) in radio-quiet quasars is still debated, primarily since only a handful of INOV events with good ...
  • Indian Astronomical Observatory - High Altitude Station for Optical-Infrared Astronomy 
    Anupama, G. C (Indian Institute of Astrophysics, Bangalore, 2000)
  • The Local Stellar Population of Slow Nova Regions in the SMC 
    Subramaniam, A; Anupama, G. C (Astronomical Society of India, 2003)
  • Night sky at the Indian Astronomical Observatory during 2000-2008 
    Stalin, C. S; Hegde, M; Sahu, D. K; Parihar, P. S; Anupama, G. C; Bhatt, B. C; Prabhu, T. P (Astronomical Society of India, 2008-09)
    This paper presents an analysis of the optical night sky brightness and extinction coefficient measurements in UBVRI at the Indian Astronomical Observatory (IAO), Hanle, during the period 2000–2008. They are obtained from ...
  • Night Sky Extinction Measurements at the Indian Astronomical Observatory, Hanle 
    Parihar, P. S; Sahu, D. K; Bhatt, B. C; Subramaniam, A; Anupama, G. C; Prabhu, T. P (Astronomical Society of India, 2003)
    We present the estimates of the night sky extinction at the Indian Astronomical Observatory. Also presented are the estimates of the night sky brightness. The extinction in the U band at IAO is found to be lower than the ...
  • Nova V4444 Sagittarii 1999 in the early decline and quiescent phases 
    Kamath, U. S; Ashok, N. M; Anupama, G. C (Astronomical Society of India, 2008-12)
    We present near-infrared and optical spectra of the fast nova V4444 Sagittarii at two single epochs in the early decline phase and unfiltered images obtained in quiescence. Based on this and other available data, we discuss ...
  • Observations of the type IIp supernova 2001X during the plateau phase 
    Anupama, G. C; Sahu, D. K (Astronomical Society of India, 2002-09)
  • OMR spectrograph at Vainu Bappu Telescope, Kavalur 
    Prabhu, T. P; Anupama, G. C; Surendiranath, R (Astronomical Society of India, 1998)
  • Optical observations of the bright long duration peculiar GRB 021004 afterglow. 
    Pandey, S. B; Sahu, D. K; Resmi, L; Sagar, R; Anupama, G. C; Bhattacharya, D; Mohan, V; Prabhu, T. P; Bhatt, B. C; Pandey, J. C; Parihar, P. S; Castro-Tirado, A. J (Astronomical Society of India, 2003)
    The CCD magnitudes in Johnson B,V and Cousins R and I photometric passbands are determined for the bright long duration GRB 021004 afterglow from 2002 October 4 to 16 starting ~ 3 hours after the γ - ray burst. Light curves ...
  • Optical photometry of the GRB 010222 afterglow 
    Cowsik, R; Prabhu, T. P; Anupama, G. C; Bhatt, B. C; Sahu, D. K; Ambika, S; Padmakar; Bhargavi, S. G (Astronomical Society of India, 2001)
    The optical afterglow of GRB 010222 was observed using the recently installed 2-m telescope at the Indian Astronomical Observatory, Hanle, and the telescopes at the Vainu Bappu Observatory, Kavalur, beginning ~ 0.6 day ...
  • Optical spectroscopy of nova V1494 Aquilae 1999 
    Anupama, G. C; Sahu, D. K; Mayya, Y. D (Astronomical Society of India, 2001)
  • Optical spectroscopy of SN1998S 
    Anupama, G. C; Pandey, G; Sivarani, T (Astronomical Society of India, 2000)
  • Optical Spectroscopy of the nova-like variable V 445 Puppis 
    Kamath, U. S; Anupama, G. C (Astronomical Society of India, 2002-09)
    V445 Puppis is a peculiar variable which had a nova-like eruption in December 2000. The early spectra did not show any emission lines of hydrogen or helium. Fe II lines were very dominant during this phase. We present optical ...
  • Optical studies of novae 
    Anupama, G. C; Kamath, U. S (Astronomical Society of India, 2012-09)
    We review the observational characteristics of classical and recurrent novae in the optical region, in the context of observational programmes carried out using telescopes at the Vainu Bappu Observatory (VBO) and the ...
  • Photometric and spectroscopic evolution of type II-P supernova SN 2004A 
    Gurugubelli, U. K; Sahu, D. K; Anupama, G. C; Chakradhari, N. K (Astronomical Society of India, 2008-09)
    We present optical photometry and spectroscopy of the normal type IIP supernova SN2004A, which was discovered in the galaxy NGC 6207 on 2004 January 9.84UT. Early observations indicated that the supernova was discovered ...
  • Respect - Software Package for Reduction of Astronomical Spectra 
    Prabhu, T. P; Anupama, G. C; Giridhar, S (Astronomical Society of Indian, 1987)
    The interactive software package RESPECT developed for reducing astronomical spectroscopic data at Vainu Bappu Observatory (VBO), Kavalur, is described. Each command of RESPECT performs a simple operation on a one-dimensional ...
  • Site characteristics of The Indian Astronomical Observatory, Hanle 
    Bhatt, B. C; Prabhu, T. P; Anupama, G. C (Astronomical Society of India, 2000)
    A brief summary of site characteristics of Indian Astronomical Observatory, Hanle, Ladakh (altitude 4500 m), is presented based on a survey being carried out since the last four years.

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