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Bright low mass eclipsing binary candidates observed by STEREO

Wraight, K. T.; Fossati, L.; White, Glenn J.; Norton, Andrew and Bewsher, D. (2012). Bright low mass eclipsing binary candidates observed by STEREO. Monthly Notices of the Royal Astronomical Society, 427(3) pp. 2298–2307.

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Observations from the Heliospheric Imagers (HI-1) on both the STEREO spacecraft have been analysed to search for bright low mass eclipsing binaries (EBs) and potential brown dwarf transits and to determine the radii of the companions. A total of nine EB candidates have been found, ranging in brightness from V = 6.59 to 11.3 mag, where the radius of the companion appears to be less than 0.4 R_sun, with a diverse range of host temperatures, from 4074 to 6925 K. Both components of one candidate, BD-07 3648, appear to be less than 0.4 R_sun and this represents a particularly interesting system for further study. The shapes of the eclipses in some cases are not clear enough to be certain they are total and the corresponding radii found should therefore be considered as lower limits. The EBs reported in this paper have either been newly found by the present analysis or previously reported to be eclipsing by our earlier STEREO/HI-1 results. One of the new objects has subsequently been confirmed using archival SuperWASP data. This study was made possible by using an improved matched filter extraction algorithm, which is described in this paper.

Item Type: Journal Item
Copyright Holders: 2012 Wiley / RAS
ISSN: 1365-2966
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
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Item ID: 35731
Depositing User: Andrew Norton
Date Deposited: 07 Dec 2012 15:51
Last Modified: 24 Jun 2020 17:54
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