The H-alpha profile of Algol

Details The H-alpha profile of Algol The H-alpha profile of Algol

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...219..219g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 219, no. 1-2, July 1989, p. 219-228. Research supported by SNSF.

Astronomy and Astrophysics

Astrophysics

11

Eclipsing Binary Stars, H Alpha Line, Stellar Spectra, Stellar Systems, Triple Stars, A Stars, B Stars, Emission Spectra, K Stars, Red Shift, Shock Waves

Scientific paper

While small differences exist, the profile obtained from the present high-resolution observations of the H-alpha line over the entire 2.87-day period of the Algol binary system which represents a complex structure exhibits the same evolution vs phase in 1985 and 1986. The H-alpha profile is interpreted in the framework of the existence of an accretion from the secondary to the primary, through the Lagrangian point L(1); no accretion disk need be invoked. All main features and their evolution with phase can be qualitatively explained, and the H-alpha emission profile is found to be consistent with the presence of a corona around the secondary.

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