Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..281g&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 685, p. 281-286.
Astronomy and Astrophysics
Astronomy
15
B Stars, Binary Stars, Companion Stars, Emission Spectra, Helium, H Alpha Line, Photosphere, Spectral Line Width, Stellar Envelopes, Stellar Mass, Stellar Spectra
Scientific paper
We present H-alpha and He I 6678 emission profiles for the Be binary system Phi Persei. Both lines display orbital phase-related variations in radial velocity and equivalent width that can be used to associate the lines with emitting gas surrounding the Be star primary or undetected secondary. We find that one component of He I 6678 emission follows the He II 4686 radial-velocity curve given by Poeckert (1981) which indicates an origin in the circumstellar gas near the secondary. A second emission component probably forms between the stars in a gas flow directed toward the high-density portion of the primary's circumstellar disk that faces the secondary.
Gies Douglas R.
McDavid David
Penny Laura R.
Willis Chilinda Y.
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