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BD+61^o2213 : an interesting ellipsoidal or eclipsing variable in the open cluster NGC 7160 (CROSBI ID 88018)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Harmanec, Petr ; Božić, Hrvoje ; Eenens, Philippe ; Žižnovsky, Jozef BD+61^o2213 : an interesting ellipsoidal or eclipsing variable in the open cluster NGC 7160 // Astronomy & astrophysics, 346 (1999), 1; 87-90-x

Podaci o odgovornosti

Harmanec, Petr ; Božić, Hrvoje ; Eenens, Philippe ; Žižnovsky, Jozef

engleski

BD+61^o2213 : an interesting ellipsoidal or eclipsing variable in the open cluster NGC 7160

Light variability of BD +61 2213, first suspected more than 20 years ago, is confirmed on the basis of observations from three observatories. The light of BD +61 2213 apparently varies with the period of 1.2028251 days 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 determination of its physical elements could also improve the knowledge of the distance of th NGC 7160 cluster.

Stars; binaries; close - binaries; eclipsing - binaries; spectroscopic - stars; individual; BD +61 2213 - galaxy; open clusters and associations; individual; NGC 7160

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Podaci o izdanju

346 (1)

1999.

87-90-x

objavljeno

0004-6361

Povezanost rada

Fizika

Indeksiranost