J/MNRAS/485/3457ivo://CDS.VizieR/J/MNRAS/485/3457doi:10.26093/cds/vizier.74853457CDSBalona L.A.Handler G.Chowdhury S.Ozuyar D.Engelbrecht C.A.,Mirouh G.M.Wade G.A.David-Uraz A.Cantiello M.2024-08-19T20:17:32Z2022-11-22T12:41:05ZCDS support team

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

cds-question@unistra.frearly-type-starsb-starsvariable-starseffective-temperaturevisible-astronomyLight curves and periodograms of 160 B stars observed by the Transiting Exoplanet Survey Satellite (TESS) space mission and 29 main-sequence B stars from Kepler and K2 were used to classify the variability type. There are 114 main-sequence B stars in the TESS sample, of which 45 are classified as possible rotational variables. This confirms previous findings that a large fraction (about 40 per cent) of A and B stars may exhibit rotational modulation. Gaia DR2 parallaxes were used to estimate luminosities, from which the radii and equatorial rotational velocities can be deduced. It is shown that observed values of the projected rotational velocities are lower than the estimated equatorial velocities for nearly all the stars, as they should be if rotation is the cause of the light variation. We conclude that a large fraction of main-sequence B stars appear to contain surface features which cannot likely be attributed to abundance patches.2019MNRAS.485.3457Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/485/3457CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/156/102 : The TESS Input Catalog and Candidate Target ListV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/485/3457https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/485/3457http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/485/3457https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/485/3457https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/485/3457http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/485/3457GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/485/3457/table1 (List of B stars observed by TESS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/3457/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/3457/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/3457/table1?GETtext/xml+votable180.050000true0.9045753-28.41713640.005555555555555556Cone search capability for table J/MNRAS/485/3457/table3 (Additional rotational variables identified from the light curves of the Kepler and K2 missions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/3457/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/3457/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/3457/table3?GETtext/xml+votable180.050000true55.578948619.7002550.0055555555555555565/8275 8280 6/375 405 461 472 496 4251 14587 14733 14744 14762 14770 14772 14942 14963 15116 15120 16430 16443 16490 16534 16577 16617 16804 16982 16990 17067 17194 17312 18486 18591 23980 26929 29028 30723 32852 32877 32935 33008 33015 33030 33049 33053 33074 33079 33084 33091-33092 33094 33097-33098 33112-33113 33115 33126 33128 33137 33156 33190 33225 33317 33361 33408 33563 33633 33808 33826 33860 33937 34823 34873 34878 34896 34914 35077 35532 37028 37033 37051 37099 37101 37421-37422 37428 37450 37452 37454 37481 37485 37487 37496 37509 37513 37517 37521 37525 37536 37543 37573-37575 37582 37584 37587 37592-37593 37604 38917-38919 38925 38935 38941 38952 38957 38967-38968 39041 39044 39053 39057 39065 39075 44317 44352 44360 44371 44385 45132 45343 45505 46081 46185 46335 46343 46368 46459 46619 46637 46802 46812 46986 47005 47021 47028 47033 47056 47477 48146 48355 484553.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/485/3457?format=asciiOpticaldefaultJ/MNRAS/485/3457/table1List of B stars observed by TESSSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTIC star name (NNNNNNNNN)meta.id;meta.mainlongONameOther namemeta.idcharVarTypeAssigned variability type (GCVS type in parenthesis from Samus et al. 2017ARep...61...80S, Cat. B/gcvs)meta.note;src.varcharVmagApparent V magnitudemagphot.mag;em.opt.VfloatSpTypeSpectral type ((Be) indicates classical Be star)src.spTypecharArot? Amplitude of the periodogram peak(10-6)src.var.amplitudeintnullableS/N? Signal to noise ratio of the periodogram peakmeta.noteintnullableNH? Number of visible harmonicsmeta.numberintnullableve? Derived equatorial rotational velocity (G1)km/sphys.veloc.rotatintnullablevsini? Projected rotational velocity from the literaturekm/sphys.veloc.rotatintnullableTeff? Adopted effective temperatureKphys.temperature.effectiveintnullabler_Teff? Reference for Teff (G2)meta.ref;pos.frameintnullablelogLstar? Stellar luminosity obtained from the Gaia parallax (Gaia Collaboration 2018A&A...616A...1G, Cat. I/345)log(solLum)phys.luminosityfloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnurot? Presumed rotational frequency (in cycles/d)d**-1em.freq;src.varfloatnullableJ/MNRAS/485/3457/table3Additional rotational variables identified from the light curves of the Kepler and K2 missionsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name from KIC/EPICmeta.id;meta.maincharONameOther namemeta.idcharVarTypeAssigned variability type (GCVS type in parenthesis from Samus et al. 2017ARep...61...80S, Cat. B/gcvs)meta.note;src.varcharVmagApparent V magnitudemagphot.mag;em.opt.VfloatnurotPresumed rotational frequency (in cycles/d)d**-1em.freq;src.varfloatArotAmplitude of the periodogram peak(10-6)src.var.amplitudeintS/NSignal to noise ratio of the periodogram peakmeta.noteintNHNumber of visible harmonicsmeta.numberintveDerived equatorial rotational velocity (G1)km/sphys.veloc.rotatintvsiniProjected rotational velocity from the literaturekm/sphys.veloc.rotatintTeffAdopted effective temperatureKphys.temperature.effectiveintr_TeffReference for Teff (G2)meta.ref;pos.frameintlogLstarStellar luminosity obtained from the Gaia parallax (Gaia Collaboration 2018A&A...616A...1G, Cat. I/345)log(solLum)phys.luminosityfloat_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainSpTypeSpectral type ((Be) indicates classical Be star)src.spTypechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main