Light curves of four southern bright hitherto unknown eclipsing binaries

Details Light curves of four southern bright hitherto unknown eclipsing binaries Light curves of four southern bright hitherto unknown eclipsing binaries

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...52...13w&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 52, April 1983, p. 13-20. Research supported by the Minister

Astronomy and Astrophysics

Astrophysics

6

Eclipsing Binary Stars, Light Curve, Peculiar Stars, Stellar Luminosity, Stellar Spectrophotometry, Variable Stars, A Stars, B Stars, Early Stars, Periodic Variations, Stellar Evolution

Scientific paper

Photometric light curves are presented for four bright southern eclipsing binaries, that were not yet known as variable stars or for which the variability was not yet understood. HR 7464 is a probable Am star in an eclipsing binary; the known single-lined spectroscopic binary HR 7422 shows two similar eclipses, so spectra with a high resolution should reveal the secondary too; both HR 6621 and HR 5034 are early-type close binaries for which there is evidence for variations of the orbital period. In particular, HR 5034 is an evolved B3 star with an orbital period of only 1.278 day, so it could be near a contact configuration.

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