J/A+A/616/A94ivo://CDS.VizieR/J/A+A/616/A94doi:10.26093/cds/vizier.36160094CDSVrard M.Kallinger T.Mosser B.Barban C.Baudin F.Belkacem K.,Cunha M.S.2019-12-23T09:12:44Z2018-08-24T15:21:00ZCDS support team

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

cds-question@unistra.frgiant-starsasteroseismologyspectroscopyThe space-borne missions CoRoT and Kepler have provided photometric observations of unprecedented quality. The study of solar-like oscillations observed in red giant stars by these satellites allows a better understanding of the different physical processes occurring in their interiors. In particular, the study of the mode excitation and damping is a promising way to improve our understanding of stellar physics that has, so far, been performed only on a limited number of targets. The recent asteroseismic characterization of the evolutionary status for a large number of red giants allows us to study the physical processes acting in the interior of red giants and how they are modified during stellar evolution. In this work, we aim to obtain information on the excitation and damping of pressure modes through the measurement of the stars' pressure mode widths and amplitudes and to analyze how they are modified with stellar evolution. The objective is to bring observational constraints on the modeling of the physical processes behind mode excitation and damping. We fit the frequency spectra of red giants with well-defined evolutionary status using Lorentzian functions to derive the pressure mode widths and amplitudes. To strengthen our conclusions, we used two different fitting techniques. Pressure mode widths and amplitudes were determined for more than 5000 red giants. With a stellar sample two orders of magnitude larger than previous results, we confirmed that the mode width depends on stellar evolution and varies with stellar effective temperature. In addition, we discovered that the mode width depends on stellar mass. We also confirmed observationally the influence of the stellar metallicity on the mode amplitudes, as predicted by models.2018A&A...616A..94Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/616/A94CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/A+A/588/A87 : Seismic global parameters of 6111 KIC (Vrard+, 2016)J/MNRAS/463/1297 : Asteroseismology of 1523 red giants (Yu+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/616/A94https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/616/A94http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/616/A94https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/616/A94https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/616/A94http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/616/A94GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/616/A94/dataprob (Seismic global parameters and their error bars extracted with the PROB method)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/616/A94/dataprob?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/616/A94/dataprob?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/616/A94/dataprob?GETtext/xml+votable180.050000true291.334208336.78661110.005555555555555556Cone search capability for table J/A+A/616/A94/datafreq (Seismic global parameters and their error bars extracted with the FREQ method)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/616/A94/datafreq?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/616/A94/datafreq?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/616/A94/datafreq?GETtext/xml+votable180.050000true290.886583336.87241670.0055555555555555564/922-923 933-935 944-946 5/3645-3647 3683 3704 3706 3729-3731 3760 3788-3789 3792 6/14559 14567 14573 14575 14577-14579 14730-14731 14744 14746 14749-14751 14792 14794-14795 14822 14828 14830-14831 14914-14915 15044-15045 15057 15059-15062 15160 15172-15174 15176 15178 15200 15232https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/616/A94?format=asciidefaultJ/A+A/616/A94/dataprobSeismic global parameters and their error bars extracted with the PROB methodKICKIC numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDnuLarge separationuHzem.freq;src.varfloatnumaxFrequency of maximum oscillation poweruHzem.freq;src.varfloatGamma0Global radial mode width at numaxuHzspect.line.widthdoublee_Gamma0? Uncertainty on Gamma0(numax)uHzstat.errorfloatnullableA0bolBolometric mode amplitude(10-6)src.var.amplitudedoubleMMass in solar unitsolMassphys.massfloate_M? Uncertainty in masssolMassstat.errorfloatnullableStatusEvolutionary status (1)meta.codeintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainAllDisplay data in all filesmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/616/A94/datafreqSeismic global parameters and their error bars extracted with the FREQ methodKICKIC numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDnuLarge separationuHzem.freq;src.varfloatnumaxFrequency of maximum oscillation poweruHzem.freq;src.varfloatGamma0Global radial mode width at numaxuHzspect.line.widthdoublee_Gamma0? Uncertainty on Gamma0(numax)uHzstat.errorfloatnullableA0bolBolometric mode amplitude(10-6)src.var.amplitudedoubleMMass in solar unitsolMassphys.massfloate_M? Uncertainty in masssolMassstat.errorfloatnullableStatusEvolutionary status (1)meta.codeintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainAllDisplay data in all filesmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/616/A94/fmp*Radial mode parameters that was extracted with the FREQ method for 5222 KICe_Gamma0? Lower uncertainty on Gamma0uHzstat.errordoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKIC numbermeta.id;meta.mainintnuRadial mode frequencyuHzem.freq;src.varfloate_nu? Uncertainty on nuuHzstat.errordoublenullableGamma0Mode widthuHzspect.line.widthdoubleE_Gamma0? Upper uncertainty on Gamma0uHzstat.error;stat.maxdoublenullablen_E_Gamma0[i] i for infinitymeta.notecharA0Mode amplitude(10-6)src.var.amplitudedoubleE_A0? Upper uncertainty on A0(10-6)stat.error;stat.maxdoublenullablen_E_A0[i] i for infinitymeta.notechare_A0? Lower uncertainty on A0(10-6)stat.errordoublenullableAllDisplay data in all filesmeta.ref.urlchar