Discovery of the first eclipsing binary barium star

Details Discovery of the first eclipsing binary barium star Discovery of the first eclipsing binary barium star

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991msngr..66...53j&link_type=abstract

ESO Messenger (ISSN 0722-6691), no. 66, p. 53-56.

Astronomy and Astrophysics

Astronomy

4

Barium, Eclipsing Binary Stars, Metallic Stars, Red Giant Stars, Stellar Magnitude, Stellar Spectrophotometry, Astronomical Observatories, Peculiar Stars

Scientific paper

Photometric monitoring of barium stars is discussed with particular attention given to the first eclipsing binary barium star, HD 46407. The spectroscopic ephemeris of HD 46407 was used to predict the times of a possible eclipse of the companion by the barium star. It is concluded that the light curve of HD 46407 derived from the photometric observations in the D50 system displays a sharp 'primary' eclipse (companion behind the barium star) and a possible shallow 'secondary' eclipse. The primary eclipse occurred in November 1988 and had a depth of about 0.02 mag.

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