Orbital Parameters of the Binary Companion in o and Using Spectrum Disentangling
| Autor: | Th. Rtviotus, A. Budovičová, S. Stefl, Petr Hadrava, O. Stahl |
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| Rok vydání: | 2005 |
| Předmět: |
Physics
Be star X-ray binary Flare star Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Star count Herbig Ae/Be star Stellar mass loss Binary star Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics O-type star |
| Zdroj: | Zdeněk Kopal’s Binary Star Legacy ISBN: 1402031319 |
| DOI: | 10.1007/1-4020-3875-5_22 |
| Popis: | oAnd is one of the most frequently observed Be stars, both in photometry and spectroscopy. It is a multiple system of at least four stars (a Be star, a close binary of spectral types B7 and B8, and an A star). For over a century, numerous observers report a highly variable spectrum, photometric changes, and a substantial range of radial velocity. The star has changed back and forth between a shell-type and a normal B-type star. The last emission phase started in 1992 and ended in 2000. |
| Databáze: | OpenAIRE |
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