J/MNRAS/495/2844ivo://CDS.VizieR/J/MNRAS/495/2844doi:10.26093/cds/vizier.74952844CDSSahoo S.K.Baran A.S.Heber U.Ostrowski J.Sanjayan S.Silvotti R.,Irrgang A.Uzundag M.Reed M.D.Shoaf K.A.Raddi R.Vuckovic M.,Ghasemi H.Zong W.Bell K.J.2024-08-21T20:14:43Z2023-09-06T15:18:29ZCDS support team

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

cds-question@unistra.frb-starssubdwarf-starsasteroseismologyeffective-temperaturestellar-distancestellar-radiivisible-astronomytrigonometric-parallaxstellar-massesspectroscopyWe report on the detection of pulsations of three pulsating subdwarf B stars observed by the Transiting Exoplanet Survey Satellite (TESS) satellite and our results of mode identification in these stars based on an asymptotic period relation. SB 459 (TIC 067584818), SB 815 (TIC 169285097), and PG 0342+026 (TIC 457168745) have been monitored during single sectors resulting in 27d coverage. These data sets allowed for detecting, in each star, a few tens of frequencies that we interpreted as stellar oscillations. We found no multiplets, though we partially constrained mode geometry by means of period spacing, which recently became a key tool in analyses of pulsating subdwarf B stars. Standard routine that we have used allowed us to select candidates for trapped modes that surely bear signatures of non-uniform chemical profile inside the stars. We have also done statistical analysis using collected spectroscopic and asteroseismic data of previously known subdwarf B stars along with our three stars. Making use of high precision trigonometric parallaxes from the Gaia mission and spectral energy distributions we converted atmospheric parameters to stellar ones. Radii, masses, and luminosities are close to their canonical values for extreme horizontal branch stars. In particular, the stellar masses are close to the canonical one of 0.47M_{sun}_ for all three stars but uncertainties on the mass are large. The results of the analyses presented here will provide important constrains for asteroseismic modelling.2020MNRAS.495.2844Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/495/2844CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)I/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/495/2844https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/495/2844http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/495/2844https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/495/2844https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/495/2844http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/495/2844GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/495/2844/table1 (Basic information of the targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/495/2844/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/495/2844/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/495/2844/table1?GETtext/xml+votable180.050000true17.1115756-32.71989780.005555555555555556Cone search capability for table J/MNRAS/495/2844/table8 (Effective temperature and average period spacing data for known sdBVs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/495/2844/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/495/2844/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/495/2844/table8?GETtext/xml+votable180.050000true290.752791737.25122220.0055555555555555566/4345 4674 14573 14575 14585 14756 14779 14825 14915 14921 14957 14961 15108 15126 15132 15137 15148 16430 18346 21000 22169 23244 23908 25582 25713 29697 35718 42965 45443 488111.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/495/2844?format=asciiOpticaldefaultJ/MNRAS/495/2844/table1Basic information of the targetsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMoreLink to tables 2, 3 and 4meta.ref.urlcharTICTESS Input Catalog identifiermeta.idlongNameStar namemeta.id;meta.maincharprimarySectorTESS Sectorobs.fieldintTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintf_Teff[a] Flag on Teff (1)meta.codecharloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggError on logglog(cm.s**-2)stat.errorfloatf_logg[a] Flag on logg (1)meta.codecharlognHeLogarithm of the Helium abundance (log(n_He_/n_H))phys.abund.Yfloate_lognHeError on lognHestat.errorfloatf_lognHe[a] Flag on lognHe (1)meta.codecharGmag? Gaia DR2 G-band magnitudemagphot.mag;em.optfloatnullableDist? Distancepcpos.distanceintnullablee_Dist? Error on Distpcstat.errorintnullableRefReference for Teff and loggmeta.ref;pos.framechar_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.mainJ/MNRAS/495/2844/table2SB 459: Angular diameters, interstellar reddening parameter, Gaia parallax, and stellar parametersNameStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogthetaLogarithm of the angular diameterlog(rad)phys.angSizedoubleE_logthetaUpper error on logthetalog(rad)stat.error;stat.maxfloate_logthetaLower error on logthetalog(rad)stat.error;pos.posAngfloatE(B-V)Colour excessmagphot.color.excessfloatE_E(B-V)Upper error on E (B-V)magstat.error;stat.maxfloate_E(B-V)Lower error on E (B-V)magstat.errorfloatRUWERenormalized unit weight errorstat.errorfloatplxGaia DR2 parallaxmaspos.parallax.trigfloate_plxError on plxmasstat.error;pos.parallaxfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggError on logglog(cm.s**-2)stat.errorfloatlognHeLogarithm of the Helium abundance (log (n_He_/n_H))phys.abund.YfloatRadStar radiussolRadphys.size.radiusfloate_RadError on RadsolRadstat.errorfloatMassStar masssolMassphys.massfloate_MassError on MasssolMassstat.error;phys.massfloatlogLLogarithm of the star luminositylog(solLum)phys.luminosityfloate_logLError on logLlog(solLum)stat.errorfloatJ/MNRAS/495/2844/table3SB 815: Angular diameters, interstellar reddening parameter, Gaia parallax, and stellar parameterse_logthetaLower error on logthetalog(rad)stat.error;pos.posAngfloate_TeffError on TeffKstat.error;phys.temperature.effectiveintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharlogthetaLogarithm of the angular diameterlog(rad)phys.angSizedoubleE_logthetaUpper error on logthetalog(rad)stat.error;stat.maxfloatE(B-V)Colour excessmagphot.color.excessfloatE_E(B-V)Upper error on E (B-V)magstat.error;stat.maxfloate_E(B-V)Lower error on E (B-V)magstat.errorfloatRUWERenormalized unit weight errorstat.errorfloatplxGaia DR2 parallaxmaspos.parallax.trigfloate_plxError on plxmasstat.error;pos.parallaxfloatTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggError on logglog(cm.s**-2)stat.errorfloatlognHeLogarithm of the Helium abundance (log (n_He_/n_H))phys.abund.YfloatRadStar radiussolRadphys.size.radiusfloate_RadError on RadsolRadstat.errorfloatMassStar masssolMassphys.massfloate_MassError on MasssolMassstat.error;phys.massfloatlogLLogarithm of the star luminositylog(solLum)phys.luminosityfloate_logLError on logLlog(solLum)stat.errorfloatJ/MNRAS/495/2844/table4PG 0342+026: Angular diameters, interstellar reddening parameter, Gaia parallax, and stellar parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharlogthetaLogarithm of the angular diameterlog(rad)phys.angSizedoubleE_logthetaUpper error on logthetalog(rad)stat.error;stat.maxfloate_logthetaLower error on logthetalog(rad)stat.error;pos.posAngfloatE(B-V)Colour excessmagphot.color.excessfloatE_E(B-V)Upper error on E (B-V)magstat.error;stat.maxfloate_E(B-V)Lower error on E (B-V)magstat.errorfloatRUWERenormalized unit weight errorstat.errorfloatplxGaia DR2 parallaxmaspos.parallax.trigfloate_plxError on plxmasstat.error;pos.parallaxfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggError on logglog(cm.s**-2)stat.errorfloatlognHeLogarithm of the Helium abundance (log (n_He_/n_H))phys.abund.YfloatRadStar radiussolRadphys.size.radiusfloate_RadError on RadsolRadstat.errorfloatMassStar masssolMassphys.massfloate_MassError on MasssolMassstat.error;phys.massfloatlogLLogarithm of the star luminositylog(solLum)phys.luminosityfloate_logLError on logLlog(solLum)stat.errorfloatJ/MNRAS/495/2844/table5List of frequencies detected in SB 459recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDFrequency IDmeta.id;meta.maincharfreqFrequency valueuHzem.freqdoublee_freqError on frequHzstat.errorfloatPeriodPeriodstime.perioddoublee_PeriodError on Periodsstat.error;time.periodfloatAmpAmplitude (in parts per thousand)src.var.amplitudefloate_AmpError on Ampstat.errorfloatS/NSignal to noise ratiostat.snrfloatlPulsation modestat.fit.paramcharnRadial orderstat.fit.paramcharJ/MNRAS/495/2844/table6List of frequencies detected in SB 815AmpAmplitude (in parts per thousand)src.var.amplitudefloate_AmpError on Ampstat.errorfloatS/NSignal to noise ratiostat.snrfloatlPulsation modestat.fit.paramcharnRadial orderstat.fit.paramcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDFrequency IDmeta.id;meta.maincharfreqFrequency valueuHzem.freqdoublee_freqError on frequHzstat.errorfloatPeriodPeriodstime.perioddoublee_PeriodError on Periodsstat.error;time.periodfloatJ/MNRAS/495/2844/table7List of frequencies detected in PG 0342+026S/NSignal to noise ratiostat.snrfloatlPulsation modestat.fit.paramcharnRadial orderstat.fit.paramcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDFrequency IDmeta.id;meta.maincharfreqFrequency valueuHzem.freqdoublee_freqError on frequHzstat.errorfloatPeriodPeriodstime.perioddoublee_PeriodError on Periodsstat.error;time.periodfloatAmpAmplitude (in parts per thousand)src.var.amplitudefloate_AmpError on Ampstat.errorfloatJ/MNRAS/495/2844/table8Effective temperature and average period spacing data for known sdBVsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharDPPeriod spacingstime.periodfloate_DP? Error on DPsstat.errorfloatnullableTeffEffective temperaturekKphys.temperature.effectivefloate_Teff? Error on TeffkKstat.error;phys.temperature.effectivefloatnullabler_DPReference for DP (1)meta.ref;pos.frameintr_TeffReference fot Teff (1)meta.ref;pos.frameint_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.main