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K2 variable catalogue : variable stars and eclipsing binaries in K2 campaigns 1 and 0
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Armstrong, David J., Kirk, James, Lam, K. W. F., McCormac, J. J., Walker, S. R., Brown, D. J. A., Osborn, Hugh P., Pollacco, Don and Spake, Jessica J. (2015) K2 variable catalogue : variable stars and eclipsing binaries in K2 campaigns 1 and 0. Astronomy & Astrophysics, 579 . pp. 1-7. A19. doi:10.1051/0004-6361/201525889 ISSN 0004-6361.
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Official URL: http://dx.doi.org/10.1051/0004-6361/201525889
Abstract
Aims.
We have created a catalogue of variable stars found from a search of the publicly available K2 mission data from Campaigns 1 and 0. This catalogue provides the identifiers of 8395 variable stars, including 199 candidate eclipsing binaries with periods up to 60 d and 3871 periodic or quasi-periodic objects, with periods up to 20 d for Campaign 1 and 15 d for Campaign 0.
Methods.
Lightcurves are extracted and detrended from the available data. These are searched using a combination of algorithmic and human classification, leading to a classifier for each object as an eclipsing binary, sinusoidal periodic, quasi periodic, or aperiodic variable. The source of the variability is not identified, but could arise in the non-eclipsing binary cases from pulsation or stellar activity. Each object is cross-matched against variable star related guest observer proposals to the K2 mission, which specifies the variable type in some cases. The detrended lightcurves are also compared to lightcurves currently publicly available.
Results.
The resulting catalogue gives the ID, type, period, semi-amplitude, and range of the variation seen. We also make available the detrended lightcurves for each object.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QB Astronomy | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
Library of Congress Subject Headings (LCSH): | Eclipsing binaries -- Light curves, Stars -- Catalogs | ||||||||
Journal or Publication Title: | Astronomy & Astrophysics | ||||||||
Publisher: | EDP Sciences | ||||||||
ISSN: | 0004-6361 | ||||||||
Official Date: | July 2015 | ||||||||
Dates: |
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Volume: | 579 | ||||||||
Number of Pages: | 7 | ||||||||
Page Range: | pp. 1-7 | ||||||||
Article Number: | A19 | ||||||||
DOI: | 10.1051/0004-6361/201525889 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 15 April 2016 | ||||||||
Date of first compliant Open Access: | 19 April 2016 | ||||||||
Funder: | United States. National Aeronautics and Space Administration (NASA) | ||||||||
Grant number: | NNX13AC07G (NASA) |
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