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Title: Search for rapid spectral variability in Be stars - Alpha Columbae, Rho Carinae and Eta Centauri
Authors: Ghosh, K. K
Pukalenthi, S
Jaykumar, K
Kuppuswamy, K
Sanjeevkumar, T
Muniandi, A
Keywords: B Stars;Emission Spectra;Shell Stars;Stellar Spectra;H Alpha Line;Spectral Line Width;Stellar Envelopes
Issue Date: Mar-1990
Publisher: European Southern Observatory
Citation: Astronomy and Astrophysics, Vol. 82, No. 3, Supplement Series, pp. 557 – 561
Abstract: A series of H-alpha profiles (in total 1006 spectra in the H-alpha region) with the time resolution around 45 s were obtained on six nights between January 29 and February 7, 1988, to search for rapid spectral variability in the Be stars - Alpha Col, Rho Car and Eta Cen. No rapid variations of Fc and W alpha) in Alpha Col and Rho Car, but such variations of Fc were present in Eta Cen on the night of February 2 and absent on other nights. Also, it was found that Fc and L 6563) of Eta Cen slowly increased from January 29, 1988 and reached to a maximum on February 2, 1988 with a subsequent gradual decay, without affecting the equivalent width of H-alpha.
ISSN: 0365-0138
Appears in Collections:IIAP Publications

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