A technique for ultrahigh-precision CCD photometry

Citation
Me. Everett et Sb. Howell, A technique for ultrahigh-precision CCD photometry, PUB AST S P, 113(789), 2001, pp. 1428-1435
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
ISSN journal
0004-6280 → ACNP
Volume
113
Issue
789
Year of publication
2001
Pages
1428 - 1435
Database
ISI
SICI code
0004-6280(200111)113:789<1428:ATFUCP>2.0.ZU;2-O
Abstract
We present techniques for wide-field ultrahigh-precision time-sampled CCD p hotometry. Representing a survey of field stars, our data consist of UBVRI photometry and a V-band time series of exposures on 5 consecutive nights co vering 11,500 stars in a similar to1 deg(2) field. The resulting light curv es reach precisions of 0.0020 mag per exposure in the brightest stars (V si milar to 14). Light curves binned and averaged over 4.5 hr reach precisions of 0.00019 mag for the brightest stars. We present example light curves an d discuss one application for surveys of this type: the search for transits by extrasolar planets.