Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4801
Title: Marginally Low Mass Ratio Close Binary System V1191 Cyg
Authors: Ulaş, B.
Kalomeni, Belinda
Keskin, Varol
Köse, O.
Yakut, Kadri
Keywords: Stars
Eclipsing
Fundamental parameters
V1191 Cyg
Publisher: Elsevier Ltd.
Source: Ulaş, B., Kalomeni, B., Keskin, V., Köse, O., and Yakut, K. (2012). Marginally low mass ratio close binary system V1191 Cyg. New Astronomy, 17(1), 46-49. doi:10.1016/j.newast.2011.06.002
Abstract: In this study, we present photometric and spectroscopic variations of the extremely small mass ratio (q ≃ 0.1) late-type contact binary system V1191 Cyg. The parameters for the hot and cooler companions have been determined as Mh = 0.13 (1) M⊙, Mc = 1.29 (8) M ⊙, Rh = 0.52 (15) R⊙, Rc = 1.31 (18) R⊙, Lh = 0.46 (25) L⊙, Lc = 2.71 (80) L⊙, the separation of the components is a = 2.20 (8) R⊙ and the distance of the system is estimated as 278 (31) pc. Analyses of the times of minima indicates a period increase of dPdt=1.3(1)×10-6days/yr that reveals a very high mass transfer rate of dMdt=2.0(4)×10-7M⊙/yr from the less massive component to the more massive one. New observations show that the depths of the minima of the light curve have been interchanged. © 2011 Elsevier B.V. All rights reserved.
URI: http://doi.org/10.1016/j.newast.2011.06.002
http://hdl.handle.net/11147/4801
ISSN: 1384-1092
1384-1076
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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