Parameters of two low-mass contact eclipsing binaries near the short-period limit
نویسندگان
چکیده
منابع مشابه
Parameters of two low - mass contact eclipsing binaries near the short - period limit
The two objects 1SWASP J150822.80−054236.9 and 1SWASP J160156.04+202821.6 were initially detected from their SuperWASP archived light curves as candidate eclipsing binaries with periods close to the short-period cut-off of the orbital period distribution of main sequence binaries, at ∼0.2 d. Here, using INT spectroscopic data, we confirm them as double-lined spectroscopic and eclipsing binaries...
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SuperWASP light curves for 53 W UMa-type eclipsing binary (EB) candidates, identified in previous work as being close to the contact binary short-period limit, were studied for evidence of period change. The orbital periods of most of the stars were confirmed, and period decrease, significant at more than 5 σ, was observed in three objects: 1SWASP J174310.98+432709.6 (−0.055 ± 0.003 s yr-1), 1S...
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Building on previous work, a new search of the SuperWASP archive was carried out to identify eclipsing binary systems near the shortperiod limit. 143 candidate objects were detected with orbital periods between 16 000 and 20 000 s, of which 97 are new discoveries. Period changes signif cant at 1σ or more were detected in 74 of these objects, and in 38 the changes were signif cant at 3σ or more....
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2014
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201321926