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A Peculiar Variable Star HD229221 - From 1994 to 1997

Published online by Cambridge University Press:  14 August 2015

Jun-Jie Wang  and
Jing-Yao Hu
Jun-Jie Wang
Affiliation:
Beijing Astronomical Observatory, Chinese Academy of Sciences, [email protected], [email protected]
Jing-Yao Hu
Affiliation:
Beijing Astronomical Observatory, Chinese Academy of Sciences, [email protected], [email protected]

Extract

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From 1994 to 1997, we observed the star HD229221 several times spectroscopically by using the Beijing Astronomical Observatory 2.16 m telescope and the spectrograph Universal.

From the spectra we clearly see that the H-α spectral feature of this star underwent a peculiar variation, from a single emission line to one composed of three components, i.e. emission+absorption+filled emission. In our paper, based on an analysis of its spectral line variation and some physical parameters (e.g. luminosity, age, etc.), we discuss the possible reasons that might cause this peculiar variation.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 11 , Issue 1: Highlights of Astronomy. As presented at the XXIIIrd General Assembly of the IAU (Part A), 1997 , 1998 , pp. 399
Copyright
Copyright © Kluwer 1998