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The probabilities of discovering detached close binary (type DM) stars as eclipsing variables are calculated as a function
of the mass of the main component, mass ratio, major semiaxis, and angle of inclination of the orbit. The case of total limb
darkening (hypothesis “D”) is examined. This is compared with earlier results for uniformly bright stellar disks (hypothesis
“U”). Based on data from Svechnikov and Kuznetsova’s Catalog of Approximate Photometric and Absolute Elements of Eclipsing
Variables, the spatial density of stars of this type in the neighborhood of the sun is estimated to be ≈ 460 · 10
−6
pc−3.
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Translated from Astrofizika, Vol. 49, No. 1, pp. 151–169 (February 2006). 相似文献
2.
J.?Rukmini P.?Vivekananda?RaoEmail author K.?Sriram 《Astrophysics and Space Science》2005,299(2):109-116
Study of eclipsing binaries in an open cluster offer information regarding the age of the cluster in addition to the component
stars. In this paper we present the analysis of a W UMa system discovered in the open cluster NGC 6791 using the Wilson–Devinney
(W–D) method. 相似文献
3.
B. Albayrak G. Djurašević S. Selam M. Yilmaz S. Erkapić O. Aksu T. Tanriverdi 《Astrophysics and Space Science》2005,296(1-4):293-296
BVR light curves of the recently discovered eclipsing binary V351 Peg were studied to derive the preliminary physical parameters
of the system. The light curves were obtained at the TüBİTAK* – Turkish National Observatory (TUG) during three nights in
August, 2003. The solutions were made using Djurašević’s inverse problem method. V351 Peg is a system in an overcontact configuration
(f
over∼ 21 %) with a relatively small temperature difference between the components ΔT ≈ 20 K. The results suggest a significant mass and energy transfer from the more massive primary onto the less massive secondary.
The hot area on the less massive star, near the neck region, can be considered as a consequence of this mass and energy exchange
between the components through the connecting neck of the common envelope.
TüBİTAK: The Scientific and Technical Research Council of Turkey. 相似文献
4.
S. Selam B. Albayrak M. Yilmaz H. V. Şenavci İ Özavci C. Çetintaş 《Astrophysics and Space Science》2005,296(1-4):305-308
Photoelectric UBV light curves of the recently discovered eclipsing binary HX UMa were obtained and studied to determine the preliminary physical
parameters of the system for the first time. The observations were taken at the TüBİTAK1 – Turkish National Observatory (TUG) on three nights in April 2003. A simultaneous analysis of the light and radial velocity
curves yields a typical A-type contact binary with a high degree of overcontact. The influence of the close visual companion
to the total light of the system was taken into account during the analysis.
1TüBİTAK: The Scientific and Technical Research Council of Turkey. 相似文献
5.
The probability of discovering contact close binary stars in early spectral classes (CE systems) as eclipsing variables is
calculated as a function of the mass of the principal component, the mass ratio, and the angle of inclination of the orbit.
The case of total limb darkening of the star's disk (hypothesis “D”) is examined. A comparison with previous results for uniformly
bright stellar disks (hypothesis “U”) shows that the difference between the two cases is small.
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Translated from Astrofizika, Vol. 51, No. 2, pp. 285–294 (May 2008). 相似文献
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