J/AJ/164/255ivo://CDS.VizieR/J/AJ/164/255doi:10.26093/cds/vizier.51640255CDSCasamiquela L.Gebran M.Agueros M.A.Bouy H.Soubiran C.2023-05-26T08:53:23Z2023-02-24T08:49:54ZCDS support team

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

cds-question@unistra.fropen-star-clustersa-starschemical-abundancesvisible-astronomyspectroscopyinfrared-astronomyeffective-temperatureThe recently rediscovered open cluster Stock2, located roughly 375pc away and about 400Myr old, has the potential to be an exciting new testbed for our understanding of stellar evolution. We present results from a spectroscopic campaign to characterize stars near the cluster's main-sequence turnoff; our goal is to identify candidate chemically peculiar stars among the cluster's A-stars. We obtained echelle spectra for 64 cluster members with ESPaDOnS on the 3.6m Canada-France-Hawaii Telescope, Maunakea Observatory, USA, and for six stars with SOPHIE on the 1.93m telescope at the Observatoire de Haute-Provence, France. We complemented these new observations with those of 13 high-mass cluster members from the HARPS-N archive; our overall sample is of 71 stars. We derived the fundamental parameters (Teff, logg, [M/H]) as well as v_e_sini for our sample using the sliced inverse regression technique, and then used iSpec to derive individual abundances of 12 chemical species. With these abundance determinations, we identified nine A-stars with anomalous levels of Sc, Ca, and other metallic lines. Follow-up observations of these Am candidates with a known age can transform them into benchmarks for evolutionary models that include atomic diffusion and help build a better understanding of the complex interactions between macroscopic and microscopic processes in stellar interiors.2022AJ....164..255Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/255CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/A+A/475/1053 : Magnetic fields in Ap/Bp stars (Auriere+, 2007)J/A+A/523/A91 : CoRoT/Exoplanet fields with MATISSE (Gazzano+, 2010)J/A+A/523/A71 : A and F stars abundances in the Hyades (Gebran+, 2010)J/A+A/573/A67 : Fundamental stellar parameters from PolarBase (Paletou+, 2015)J/A+A/589/A83 : PCA-based inversion of stellar parameters (Gebran+, 2016)J/A+A/616/A10 : 46 open clusters GaiaDR2 HRdiagrams (Gaia Collaboration, 2018)J/ApJ/879/100 : K2 rotation periods Hyades & Praesepe members (Douglas+, 2019)J/MNRAS/485/3623 : Red giants abundance analysis open clusters (Reddy+, 2019)J/A+A/640/A1 : Portrait Galactic disc (Cantat-Gaudin+, 2020)J/A+A/635/A8 : Differential abundances of open clusters (Casamiquela+, 2020)J/A+A/645/A106 : Atomic data for the Gaia-ESO Survey (Heiter+, 2021)J/A+A/661/A147 : Galac. interstellar dust Gaia-2MASS 3D maps (Lallement+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/164/255https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/164/255http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/164/255https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/164/255https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/164/255http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/164/255GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/164/255/table2 (Atmospheric parameters and abundances of the analyzed spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/164/255/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/164/255/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/164/255/table2?GETtext/xml+votable180.050000true37.339871957.08988530.0055555555555555565/815 901 6/3254 3256 3259 3306 3589 3600-3601 3603https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/164/255?format=asciiOpticalInfrareddefaultJ/AJ/164/255/table2Atmospheric parameters and abundances of the analyzed spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaGaia DR2 identifiermeta.id;meta.mainInstInstrument identifier (1)meta.id;instrcharS/N[30/94] Spectrum signal-to-noise ratiostat.snrintTeff[7176/9971] Effective temperatureKphys.temperature.effectivedoublelogg[2.65/4.95] log surface gravitylog(cm.s**-2)phys.gravityfloatvsini[6.25/282] Projected rotational velocity from SIRkm/sphys.veloc.rotatfloatSimbadSimbad column added by the CDSmeta.ref.urlchar[Fe/H][-0.22/0.35]? iSpec Fe abundance relative to the Sunlog(Sun)phys.abund.Fefloatnullablee_[Fe/H][0.04/0.37]? Uncertainty in [Fe/H]log(Sun)stat.error;phys.abund.Fefloatnullable[Ti/H][-0.29/0.42]? iSpec Ti abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Ti/H][0.04/0.3]? Uncertainty in [Ti/H]log(Sun)stat.error;phys.abundfloatnullable[Cr/H][-0.11/0.72]? iSpec Cr abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Cr/H][0.02/0.4]? Uncertainty in [Cr/H]log(Sun)stat.error;phys.abundfloatnullable[Si/H][0/1.04]? iSpec Si abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Si/H][0.01/0.4]? Uncertainty in [Si/H]log(Sun)stat.error;phys.abundfloatnullable[O/H][-0.68/1.79]? iSpec O abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[O/H][0.1/0.7]? Uncertainty in [O/H]log(Sun)stat.error;phys.abundfloatnullable[Mg/H][-0.12/1.08]? iSpec Mg abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Mg/H][0.08/0.4]? Uncertainty in [Mg/H]log(Sun)stat.error;phys.abundfloatnullable[Ca/H][-0.73/0.77]? iSpec Ca abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Ca/H][0/0.8]? Uncertainty in [Ca/H]log(Sun)stat.error;phys.abundfloatnullable[Y/H][-0.06/2.11]? iSpec Y abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Y/H][0/0.5]? Uncertainty in [Y/H]log(Sun)stat.error;phys.abundfloatnullable[Sc/H][-1.65/0.42]? iSpec Sc abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Sc/H][0/0.5]? Uncertainty in [Sc/H]log(Sun)stat.error;phys.abundfloatnullable[Ba/H][0.15/1.13]? iSpec Ba abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Ba/H][0.03/0.5]? Uncertainty in [Ba/H]log(Sun)stat.error;phys.abundfloatnullable[Zr/H][-0.35/1.21]? iSpec Zr abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Zr/H][0.01/0.5]? Uncertainty in [Zr/H]log(Sun)stat.error;phys.abundfloatnullable[Sr/H][-0.98/0.86]? iSpec Sr abundance relative to the Sunlog(Sun)phys.abundfloatnullablee_[Sr/H][0.09/0.6]? Uncertainty in [Sr/H]log(Sun)stat.error;phys.abundfloatnullable_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.main