J/AJ/134/766ivo://CDS.VizieR/J/AJ/134/766doi:10.26093/cds/vizier.51340766CDSKaroff C.Rauer H.Erikson A.Voss H.Kabath P.Wiese T.Deleuil M.,Moutou C.Meunier J.C.Deeg H.2017-10-03T05:13:02Z2009-09-13T14:49:17ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysvariable-starsphotometryThe COROT space mission will monitor several target fields for up to 150 days to perform asteroseismology and to search for extrasolar planets by photometric transits. Variable stars in the target fields are important objects for additional scientific studies but can also disturb the search for planetary transits. A variability characterization of the target fields prior to COROT observations is therefore important for two reasons: to find interesting variable stars to monitor further and to make an analysis of the impact of the variable stars on detecting extrasolar planet transits with COROT. The Berlin Exoplanet Search Telescope (BEST) is a small wide-angle telescope dedicated to high-precision photometry. It has observed a 9deg^2^ field of view centered at (RA,DE)=(19:00:00.0+00:01:55.2) (J2000.0) over 98 nights to search for variable stars in the surroundings of the first long-run target field (LRc1) of the COROT space mission. In this data set we identified 92 periodic variable stars, 86 of which are new discoveries and 6 of which are known from the General Catalogue of Variable Stars (GCVS). For five of the GCVS stars, variability could not be confirmed. Forty-three of the 92 detected periodic variable stars are identified as eclipsing binaries. We have evaluated the completeness of our survey for eclipsing binaries by comparing it to the expected fraction of eclipsing binaries based on Hipparcos observations. From this evaluation we show that the BEST data set presented here has a completeness of 20%-30% for periods longer than 1 day and is complete relative to Hipparcos for short-period binaries.2007AJ....134..766Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/134/766CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/corot : CoRoT observation log (CoRoT, 2009)I/252 : The USNO-A2.0 Catalogue (Monet+ 1998)J/AJ/134/1560 : BEST periodic variable stars in IR01 field (Kabath+, 2007)J/AJ/136/654 : BEST periodic variable stars in LRa1 field (Kabath+, 2008)J/AJ/137/3911 : BEST periodic variable stars in LRc2 field (Kabath+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/134/766https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/134/766http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/134/766https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/134/766https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/134/766http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/134/766GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/134/766/table2 (Periodic variable stars in the field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/134/766/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/134/766/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/134/766/table2?GETtext/xml+votable180.050000true290.9609583-0.58163890.0055555555555555565/7573 7616 6/29951 30122 30300 30301 30303 30470 30472 30473 30474https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/134/766?format=asciiOpticaldefaultJ/AJ/134/766/table2Periodic variable stars in the fieldOSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[KRE2007]Running identification numbermeta.id;meta.maincharUSNOThe USNO-A2.0 identification numbermeta.idcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainPerPerioddtime.periodfloatRmagMean magnitude (1)magphot.mag;stat.meanfloatAmpAmplitude of periodic variability (2)magsrc.varfloatVTypeVariability type (3)meta.notechar