J/A+A/650/A115ivo://CDS.VizieR/J/A+A/650/A115doi:10.26093/cds/vizier.36500115CDSDreau G.Mosser B.Lebreton Y.Gehan C.Kallinger T.2021-07-05T12:57:58Z2021-06-15T07:09:47ZCDS support team

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

cds-question@unistra.frlate-type-starsasteroseismologyThe space-borne missions CoRoT and Kepler opened up a new opportunity for better understanding stellar evolution by probing stellar interiors with unrivalled high-precision photometric data. Kepler has observed stellar oscillation for four years, which gave access to excellent frequency resolution that enables deciphering the oscillation spectrum of evolved red giant branch and asymptotic giant branch stars. The internal structure of stars in the upper parts of the red and asymptotic giant branches is poorly constrained, which makes the distinction between red and asymptotic giants difficult. We perform a thorough seismic analysis to address the physical conditions inside these stars and to distinguish them. We took advantage of what we have learnt from less evolved stars. We studied the oscillation mode properties of ~2000 evolved giants in a model described by the asymptotic pressure-mode pattern of red giants, which includes the signature of the helium second-ionisation zone. Mode identification was performed with a maximum cross-correlation method. Then, the modes were fitted with Lorentzian functions following a maximum likelihood estimator technique. We derive a large set of seismic parameters of evolved red and asymptotic giants. We extracted the mode properties up to the degree l=3 and investigated their dependence on stellar mass, metallicity, and evolutionary status. We identify a clear difference in the signature of the helium second-ionisation zone between red and asymptotic giants. We also detect a clear shortage of the energy of l=1 modes after the core-He-burning phase. Furthermore, we note that the mode damping observed on the asymptotic giant branch is similar to that observed on the red giant branch. We highlight that the signature of the helium second-ionisation zone varies with stellar evolution. This provides us with a physical basis for distinguishing red giant branch stars from asymptotic giants. Here, our investigation of stellar oscillations allows us to constrain the physical processes and the key events that occur during the advanced stages of stellar evolution, with emphasis on the ascent along the asymptotic giant branch, including the asymptotic giant branch bump.2021A&A...650A.115Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/650/A115CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)J/A+A/588/A87 : Seismic global parameters of 6111 KIC (Vrard+, 2016)J/A+A/618/A109 : Seismic global parameters of 372 KIC (Mosser+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/650/A115https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/650/A115http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/650/A115https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/650/A115https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/650/A115http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/650/A115GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/650/A115/tablec1 (Global seismic parameters of the stars listed in the paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/650/A115/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/650/A115/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/650/A115/tablec1?GETtext/xml+votable180.050000true291.1098636.73318110.0055555555555555564/922-923 933-935 944-945 5/3646-3647 3683 3704 3706 3729-3731 3785-3787 3789 3792 6/14567 14573 14575 14578-14579 14581-14583 14730-14731 14744 14746 14750-14751 14792 14794-14795 14828 14830 14914-14915 15041-15045 15057 15059-15061 15136-15137 15139 15153-15155 15160 15172-15174 15176 15178 15200 15232https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/650/A115?format=asciidefaultJ/A+A/650/A115/tablec1Global seismic parameters of the stars listed in the paperGgl? Glitch periodtime.periodfloatnullableV1? Dipole mode visibilityinstr.calibfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKIC numbermeta.id;meta.mainintDnuLarge separationuHzem.freq;src.varfloatMStellar masssolMassphys.massfloatTeffEffective temperatureKphys.temperature.effectiveinteps? Acoustic offsetpos;arith.difffloatnullablee_eps? Uncertainty in epsstat.errorfloatnullabled01? Reduced l=1 small separationpos.angDistancefloatnullablee_d01? Uncertainty in d01stat.errorfloatnullabled02? Reduced l=2 small separationpos.angDistancefloatnullablee_d02? Uncertainty in d02stat.errorfloatnullabled03? Reduced l=3 small separationpos.angDistancefloatnullablee_d03? Uncertainty in d03stat.errorfloatnullableAgl? Glitch amplitudesrc.var.amplitudefloatnullablee_Agl? Uncertainty in Aglstat.errorfloatnullablee_Ggl? Uncertainty in Gglstat.errorfloatnullablePhigl? Glitch phasetime.phasefloatnullablee_Phigl? Uncertainty in Phiglstat.errorfloatnullablee_V1? Uncertainty in V1stat.errorfloatnullableV2? Quadrupole mode visibilityinstr.calibfloatnullablee_V2? Uncertainty in V2stat.errorfloatnullableV3? Octupole mode visibilityinstr.calibfloatnullablee_V3? Uncertainty in V3stat.errorfloatnullableGamma0? Radial mode widthuHzspect.line.widthfloatnullablee_Gamma0? Uncertainty in Gamma0uHzstat.errorfloatnullableGamma1? Dipole mode widthuHzspect.line.widthfloatnullablee_Gamma1? Uncertainty in Gamma1uHzstat.errorfloatnullableGamma2? Quadrupole mode widthuHzspect.line.widthfloatnullablee_Gamma2? Uncertainty in Gamma2uHzstat.errorfloatnullableA0? Radial mode amplitude(10-6)src.var.amplitudefloatnullablee_A0? Uncertainty in A0(10-6)stat.errorfloatnullableA1? Dipole mode amplitude(10-6)src.var.amplitudefloatnullablee_A1? Uncertainty in A1(10-6)stat.errorfloatnullableA2? Quadrupole mode amplitude(10-6)src.var.amplitudefloatnullablee_A2? Uncertainty in A2(10-6)stat.errorfloatnullableeta? Envelope autocorrelation functionstat.fit.paramfloatnullableevo[0/3]? Evolutionary status (1)meta.codeintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions fron KIC (right ascension part)degpos.eq.ra;meta.main_DEPositions fron KIC (declination part)degpos.eq.dec;meta.main