J/A+A/543/A125ivo://CDS.VizieR/J/A+A/543/A125doi:10.26093/cds/vizier.35430125CDSGuenther E.W.Gandolfi D.Sebastian D.Deleuil M.Moutou C.Cusano F.2017-05-10T13:16:56Z2012-07-10T07:51:33ZCDS support team

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

cds-question@unistra.frlate-type-starsmorgan-keenan-classificationIn here we study the stellar content of the CoRoT-fields IRa01, LRa01 (=LRa06), and LRa02 by determining the spectral types of 11466 stars. Nine planet host stars have already been identified in these fields. The determination of the spectral types of thousands of stars of which CoRoT obtained high-precision light-curves also opens up a large variety of other research projects. For our study, we used spectra obtained with the multi-object spectrograph AAOmega and derived the spectral types by using template spectra with well known parameters. We find that 34.8+/-0.7% of the stars observed by CoRoT in these fields are F-dwarfs, 15.1+/-0.5% G-dwarfs, and 5.0+/-0.3% K-dwarfs. We conclude that the apparent lack of exoplanets of K- and M-stars is explained by the relatively small number of these stars in the observed sample. We also show that the apparently large number of planets orbiting F-stars is also explained by the large number of such stars in these fields. Given the number of F-stars, we would have expected to find even more planet orbiting F-stars. Our study also shows that the difference between the sample of stars that CoRoT observes and a sample of randomly selected stars is relatively small, and that the yield of CoRoT is the detection one hot Jupiter amongst 2100+/-700 stars. We finally conclude that transit search programs can be used in order to study the relation between the frequency of planets and the mass of the host stars, and that the results obtained so far are in general agreement with those of radial velocity programs.2012A&A...543A.125Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/543/A125CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/corot : CoRoT observation log Release 10 (CoRoT, 2012)J/A+A/541/A34 : CoRoT-fields IRa01, LRa01, LRa02 stars SpType (Sebastian+ 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/543/A125https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/543/A125http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/543/A125https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/543/A125https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/543/A125http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/543/A125GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/543/A125/table2 (Spectral types)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/543/A125/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/543/A125/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/543/A125/table2?GETtext/xml+votable180.050000true100.6859-1.72530.0055555555555555565/5510 5519 6/22029 22034-22035 22044 22046-22047 22065 22067-22068 22070-22071 22073 22075 22120 22122 22164-22165 22167 22208-22210https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/543/A125?format=asciiOpticaldefaultJ/A+A/543/A125/table2Spectral typesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCoRoTCoRoT identification number (Cat. B/corot)meta.id;meta.mainlongRAJ2000Right ascension in decimal degrees (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000.0)degpos.eq.dec;meta.mainVmag? V magnitudemagphot.mag;em.opt.VfloatnullableSpTypeMK spectral type from AAOmegasrc.spTypecharTeff? Effective temperature from Gazzano et al. (2010, Cat. J/A+A/523/A91)Kphys.temperature.effectiveintnullablee_Teff? rms uncertainty on TeffKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravity from Gazzano et al. (2010, Cat. J/A+A/523/A91)log(cm.s**-2)phys.gravityfloatnullablee_logg? rms uncertainty on logglog(cm.s**-2)stat.errorfloatnullableExoNameExo-name, CoRoT- N (just for 2 stars for which exoplanets were detected)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar