BD+61(deg)2213: an interesting ellipsoidal or eclipsing variable in the open cluster NGC 7160

Details BD+61(deg)2213: an interesting ellipsoidal or eclipsing variable in the open cluster NGC 7160 BD+61(deg)2213: an interesting ellipsoidal or eclipsing variable in the open cluster NGC 7160

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...346...87h&link_type=abstract

Astronomy and Astrophysics, v.346, p.87-90 (1999)

Astronomy and Astrophysics

Astrophysics

3

Stars: Binaries: Close, Stars: Binaries: Eclipsing, Stars: Binaries: Spectroscopic, Stars: Individual: Bd+61(Deg)2213, Galaxy: Open Clusters And Associations: Individual: Ngc 7160

Scientific paper

Light variability of {BD+61(deg)2213} , first suspected more than 20 years ago, is confirmed on the basis of observations from three observatories. The light of {BD+61(deg)2213 apparently varies with a period of 1{(v {r) m d} .}2028251 and a double-wave light curve. Five available radial velocities of the star also define a large-amplitude curve with the same period. The star is, therefore, a binary as suspected earlier. We conclude, however, that it is more probably an ellipsoidal variable than an eclipsing binary. Its further spectral and photometric monitoring is desirable, especially since an accurate detemination of its physical elements could also improve the knowledge of the distance of the NGC 7160 cluster.

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