J/MNRAS/479/183ivo://CDS.VizieR/J/MNRAS/479/183doi:10.26093/cds/vizier.74790183CDSBalona L.A.2024-08-18T20:20:34Z2022-07-07T13:25:13ZCDS support team

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

cds-question@unistra.frvariable-starsvisible-astronomytrigonometric-parallaxeffective-temperatureAll stars in the Kepler field brighter than 12.5 mag have been classified according to variability type. A catalogue of {delta} Scuti and {gamma} Doradus stars is presented. The problem of low frequencies in {delta} Sct stars, which occurs in over 98 percent of these stars, is discussed. Gaia DR2 parallaxes were used to obtain precise luminosities, enabling the instability strips of the two classes of variable to be precisely defined. Surprisingly, it turns out that the instability region of the {gamma} Dor stars is entirely within the {delta} Sct instability strip. Thus, {gamma}Dor stars should not be considered a separate class of variable. The observed red and blue edges of the instability strip do not agree with recent model calculations. Stellar pulsation occurs in less than half of the stars in the instability region and arguments are presented to show that this cannot be explained by assuming pulsation at a level too low to be detected. Precise Gaia DR2 luminosities of high-amplitude {delta} Sct stars (HADS) show that most of these are normal {delta} Sct stars and not transition objects. It is argued that current ideas on A star envelopes need to be revised.2018MNRAS.479..183Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/479/183CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/479/183https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/479/183http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/479/183https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/479/183https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/479/183http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/479/183GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/479/183/table1 (Stars with precise Gaia luminosities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/479/183/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/479/183/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/479/183/table1?GETtext/xml+votable180.050000true291.1063836.79230890.005555555555555556Cone search capability for table J/MNRAS/479/183/table2 (Stars with photometric luminosities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/479/183/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/479/183/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/479/183/table2?GETtext/xml+votable180.050000true290.9190437.16521110.0055555555555555564/922-923 933 935 944-945 5/3645-3647 3683 3704 3706 3729-3731 3736-3738 3784-3785 3788-3789 3792-3793 6/14559 14567 14573 14575 14577-14579 14730-14731 14738 14744 14746-14747 14749-14751 14792 14794-14795 14822 14828 14830 14914-14915 14956 14958-14959 15040-15041 15043-15044 15057 15059-15062 15144-15146 15148-15150 15160 15200 15232https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/479/183?format=asciiOpticaldefaultJ/MNRAS/479/183/table1Stars with precise Gaia luminositiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKIC identification numbermeta.id;meta.mainintVTypeVariability classification (G1)meta.code.class;src.varcharPlxParallaxmaspos.parallaxfloate_PlxError in the parallaxmasstat.error;pos.parallaxfloatTeffEffective temperature (G2)Kphys.temperature.effectiveinte_TeffError in the effective temperatureKstat.error;phys.temperature.effectiveintAVInterstellar absorbtion in Vmagphot.magfloatlogLLogarithm of the luminositylog(solLum)phys.luminosityfloate_logLError in LogLlog(solLum)stat.errorfloat_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.mainSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/479/183/table2Stars with photometric luminositiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVTypeVariability classification (G1)meta.code.class;src.varcharKpmagKepler magnitudemagphot.mag;em.optfloatTeff? Effective temperature (G2)Kphys.temperature.effectiveintnullablee_Teff? Error in effective temperatureKstat.error;phys.temperature.effectiveintnullablelogL? Logarithm of the luminosity (2)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.mainSimbadSimbad column added by the CDSmeta.ref.urlcharKICKIC identification numbermeta.id;meta.mainint