J/MNRAS/513/374ivo://CDS.VizieR/J/MNRAS/513/374doi:10.26093/cds/vizier.75130374CDSPamos Ortega D.Garcia Hernandez A.Suarez J.C.Pascual Granado J.,Forteza S.Rodon J.R.2024-08-22T20:15:30Z2022-04-29T15:06:32ZCDS support team

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

cds-question@unistra.frasteroseismologyopen-star-clustersvariable-starsIn this work we aim at constraining the age of the young open cluster Melotte 20, known as {alpha} Per, using seismic indices. The method consists of the following steps: 1) Extract the frequency content of a sample of stars in the field of an open cluster. 2) Search for possible regularities in the frequency spectra of {delta} Sct stars candidates, using different techniques, such as the Fourier transform, the autocorrelation function, the histogram of frequency differences and the echelle diagram. 3) Constrain the age of the selected stars by both the physical parameters and seismic indices by comparing them with a grid of asteroseismic models representative of {delta} Sct stars. 4) Find possible common ages between these stars to determine the age of the cluster. We performed the pulsation analysis with MultiModes, a rapid, accurate and powerful open-source code, which is presented in this paper. The result is that the age of {alpha} Per could be between 96 and 100 Myr. This is an improvement over different techniques in the past. We the refore show that space astroseismology is capable of taking important steps in the dating of young open clusters.2022MNRAS.513..374Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/513/374CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)J/ApJ/752/58 : alpha Per cluster members (Zuckerman+, 2012)J/MNRAS/457/1028 : alpha Per cluster possible members (Sheikhi+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/513/374https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/513/374http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/513/374https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/513/374https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/513/374http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/513/374GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/513/374/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/513/374/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/513/374/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/513/374/stars?GETtext/xml+votable180.050000true55.143833352.00838890.0055555555555555566/1768 1771-1772 3120 3136-3138 3152 3160https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/513/374?format=asciidefaultJ/MNRAS/513/374/starsList of studied starsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (TIC NNNNNNNNN)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainNNumber of frequencies in table.datmeta.numberintJ/MNRAS/513/374/tableMost significant frequencies from eleven delta Scuti starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (TIC NNNNNNNNN)meta.id;meta.maincharFreqFrequencyd**-1em.freqdoublee_FreqMinimum frequency error (1)d**-1stat.errordoubleAmpAmplitudemmagphot.magdoublee_AmpMinimum amplitude error (1)mmagstat.errordoublePhasePhasetime.phasedoublee_PhaseMinimum phase error (1)stat.error;time.phasedoubleS/NSignal to Noisestat.snrfloat