IIA Institutional Repository

Browsing Publications based on data from IAO, Hanle by Subject "Techniques: spectroscopic"

Browsing Publications based on data from IAO, Hanle by Subject "Techniques: spectroscopic"

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  • Evolution of emission line activity in intermediate mass young stars 
    Manoj, P; Bhatt, H. C; Maheswar, G; Muneer, S (American Astronomical Society, 2006-12-10)
    We present optical spectra of 45 intermediate-mass Herbig Ae/Be stars. Together with the multiepoch spectroscopic and photometric data compiled for a large sample of these stars and ages estimated for individual stars by ...
  • One year of monitoring of the Type IIb supernova SN 2011dh 
    Sahu, D. K; Anupama, G. C; Chakradhari, N. K (Oxford University Press on behalf of the Royal Astronomical Society, 2013-07-21)
    Optical UBVRI photometry and low-resolution spectroscopy of the Type IIb supernova SN 2011dh in M51 are presented, covering the first year after the explosion. The light curve and spectral evolution are discussed. The early ...
  • The Peculiar Type Ib Supernova SN 2005bf: Explosion of a Massive He Star with a Thin Hydrogen Envelope? 
    Anupama, G. C; Sahu, D. K; Deng, J; Nomoto, K; Tominaga, N; Tanaka, M; Mazzali, P. A; Prabhu, T. P (University of Chicago Press, 2005-09)
    We present BVRI photometry and optical spectroscopy of SN 2005bf near maximum light. The maximum phase is broad and occurred around 2005 May 7, about 40 days after the shock breakout. SN 2005bf has a peak bolometric magnitude ...
  • Photometric and spectroscopic evolution of supernova SN 2009an: another case of a transitional Type Ia event 
    Sahu, D. K; Anupama, G. C; Anto, P (Oxford University Press on behalf of the Royal Astronomical Society, 2013-04-01)
    We present optical UBVRI photometry and medium-resolution spectroscopy of a transitional Type Ia supernova, SN 2009an, over the period −6 to +150 d from the B maximum. With a Δm15(B) = 1.514 ± 0.132, SN 2009an declines ...
  • A Study of the Role of Lyβ Fluorescence on O I Line Strengths in Be Stars 
    Blesson, M; Banerjee, D. P. K; Subramaniam, A; Ashok, N. M (IOP Publishing, 2012-07-01)
    The possibility of the Lyβ fluorescence mechanism being operational in classical Be (CBe) stars and thereby contributing to the strength of the O I λ8446 line has been recognized for long. However, this supposition needs ...

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