期刊
ASTRONOMY & ASTROPHYSICS
卷 528, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201116448
关键词
binaries: eclipsing; stars: individual: GSC2314-0530; stars: individual: NY Vir; stars: individual: V1067 Her; stars: individual: V1104 Her
资金
- Queen's University Belfast
- Universities of Keele
- St. Andrews and Leicester
- Open University
- Isaac Newton Group
- Instituto de Astrofisica de Canarias
- South African Astronomical Observatory
- STFC
- Science and Technology Facilities Council [ST/I002308/1, ST/G002355/1, ST/J000035/1, ST/I001719/1, PP/D000955/1, PP/F000073/1, ST/J000078/1, ST/G001987/1, PP/D000963/1, PP/F000057/1, PP/F000065/1, ST/G002533/1] Funding Source: researchfish
- STFC [PP/F000057/1, ST/J000035/1, ST/G002533/1, ST/G002355/1, ST/G001987/1, ST/J000078/1, PP/D000963/1, ST/I001719/1, PP/F000065/1, PP/D000955/1, ST/I002308/1, PP/F000073/1] Funding Source: UKRI
We present light curves and periods of 53 candidates for short period eclipsing binary stars identified by SuperWASP. These include 48 newly identified objects with periods <2 x 10(4) s (similar to 0.23 d), as well as the shortest period binary known with main sequence components (GSC2314-0530 = 1SWASP J022050.85 + 332047.6) and four other previously known W UMa stars (although the previously reported periods for two of these four are shown to be incorrect). The period distribution of main sequence contact binaries shows a sharp cut-off at a lower limit of around 0.22 d, but until now, very few systems were known close to this limit. These new candidates will therefore be important for understanding the evolution of low mass stars and to allow investigation of the cause of the period cut-off.
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