Assisted stellar suicide in V617 Sagittarii
نویسندگان
چکیده
منابع مشابه
Assisted stellar suicide in V 617 Sgr ⋆
Context. V617 Sgr is a V Sagittae star – a group of binaries thought to be the galactic counterparts of the Compact Binary Supersoft X-ray Sources – CBSS. Aims. To check this hypothesis, we measured the time derivative of its orbital period. Methods. Observed timings of eclipse minima spanning over 30,000 orbital cycles are presented. Results. We found that the orbital period evolves quite rapi...
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Photometric and spectroscopic characterization of the V Sge star V617 Sgr (WR 109) is presented. The orbital period, 0.207 day, is the shortest of its class. The optical light curve presents a double wave with minima and maxima of uneven brightness. Strong emission lines of highly ionized species such as HeII, NV and OVI dominate the optical spectrum. High and low photometric states have been o...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:200500227