J/ApJS/258/43ivo://CDS.VizieR/J/ApJS/258/43doi:10.26093/cds/vizier.22580043CDSMarigoP.Bossini D.Trabucchi M.Addari F.Girardi L.Cummings J.,Pastorelli G.Dal Tio P.Costa G.Bressan A.2022-08-25T11:35:57Z2022-02-15T10:04:12ZCDS support team

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

cds-question@unistra.fropen-star-clusterslate-type-starsvariable-starsphotometryBenefiting from the GAIA second and early third releases of photometric and astrometric data we examine the population of asymptotic giant branch (AGB) stars that appear in the fields of intermediate-age and young open star clusters. We identify 49 AGB star candidates, brighter than the tip of the red giant branch, with a good-to-high cluster membership probability. Among them we find 19 TP-AGB stars with known spectral type: 4 M stars, 3 MS/S stars and 12 C stars. By combining observations, stellar models, and radiative transfer calculations that include the effect of circumstellar dust, we characterize each star in terms of initial mass, luminosity, mass-loss rate, core mass, period and mode of pulsation. The information collected helps us shed light on the TP-AGB evolution at solar-like metallicity, placing constraints on the third dredge-up process, the initial masses of carbon stars, stellar winds, and the initial-final mass relation (IFMR). In particular, we find that two bright carbon stars, MSB 75 and BM IV 90, members of the clusters NGC 7789 and NGC 2660 (with similar ages of about 1.2-1.6 Gyr and initial masses between 2.1 and 1.9 solar masses), have unusually high core masses, about 0.67-0.7 solar masses. These results support the findings of a recent work (Marigo et al., 2020NatAs...4.1102M) that identified a kink in the IFMR, which interrupts its monotonic trend just at the same initial masses. Finally, we investigate two competing scenarios to explain the Mc data: the role of stellar winds in single-star evolution, and binary interactions through the blue-straggler channel.2022ApJS..258...43Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/258/43CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020)J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/258/43https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/258/43http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/258/43https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/258/43https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/258/43http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/258/43GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/258/43/stars (List of studied LPVs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/258/43/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/258/43/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/258/43/stars?GETtext/xml+votable180.050000true99.13616679.42758330.0055555555555555566/1514 3049 3149 14175 14424 15417 15711 20833 23577 23638 24330 37753 37867 39290 39766 39789 39944 40633https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/258/43?format=asciidefaultJ/ApJS/258/43/starsList of studied LPVsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLCShow the light curvesmeta.ref.urlcharNameName (as in table lcs.dat)meta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad declination (J2000)pos.eq.dec;meta.mainPerAdopted period (from table3 of the paper)dtime.periodfloatr_PerAdopted period reference (1)meta.ref;pos.framecharSNameSimbad namemeta.idcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJS/258/43/lcsLight curves of the 18 LPVsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharprimaryJDObservation time (1)dtime.epochdoubleindexedmag? Magnitude in Filter bandmagphot.magdoublenullablee_mag? Magnitude uncertaintymagstat.error;phot.magdoublenullableSurveyName of the surveymeta.idcharFilterName of the photometric filter (2)meta.id;instr.filterchar