J/ApJ/917/11ivo://CDS.VizieR/J/ApJ/917/11doi:10.26093/cds/vizier.19170011CDSSouto D.Cunha K.Smith V.V.2023-02-08T06:54:01Z2023-01-31T08:13:41ZCDS support team

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

cds-question@unistra.fropen-star-clusterschemical-abundancesradial-velocityinfrared-astronomyspectroscopyphotometryvisible-astronomyWe present a study of metallicities in a sample of main-sequence stars with spectral types M, K, G, and F (T_eff_~3200-6500K and logg~4.3-5.0dex) belonging to the solar neighborhood young open cluster Coma Berenices. Metallicities were determined using the high-resolution (R={lambda}/{Delta}{lambda}~22500) NIR spectra ({lambda}1.51-{lambda}1.69{mu}m) of the Sloan Digital Sky Survey IV APOGEE survey. Membership to the cluster was confirmed using previous studies in the literature along with APOGEE radial velocities and GaiaDR2. An LTE analysis using plane-parallel MARCS model atmospheres and the APOGEE DR16 line list was adopted to compute synthetic spectra and derive atmospheric parameters (Teff and logg) for the M dwarfs and metallicities for the sample. The derived metallicities are near-solar and are homogeneous at the level of the expected uncertainties, in particular when considering stars from a given stellar class. The mean metallicity computed for the sample of G, K, and M dwarfs is <[Fe/H]>=+0.04+/-0.02dex; however, the metallicities of the F-type stars are slightly lower, by about 0.04dex, when compared to cooler and less massive members. Models of atomic diffusion can explain this modest abundance dip for the F dwarfs, indicating that atomic diffusion operates in Coma Berenices stars. The [Fe/H] dip occurs in nearly the same effective temperature range as that found in previous analyses of the lithium and beryllium abundances in Coma Berenices.2021ApJ...917...11Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/917/11CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)I/329 : URAT1 Catalog (Zacharias+ 2015)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/345 : Gaia DR2 (Gaia Collaboration, 2018)III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)VI/119 : High accuracy computed water line list - BT2 (Barber+, 2006)J/MNRAS/365/447 : New stellar members of Coma Berenices (Casewell+, 2006)J/AJ/132/1669 : Wide-field CCD phot. around 9 open clusters (Sharma+, 2006)J/AJ/134/2340 : Membership of Praesepe & Coma Berenices (Kraus+, 2007)J/A+A/497/497 : Physical parameters from JHK flux (Gonzalez-Hernandez+, 2009)J/A+A/543/A108 : Grid of stellar models, asteroseismology (Lagarde+, 2012)J/AJ/151/144 : ASPCAP weights for APOGEE chemical elements (Garcia+, 2016)J/A+A/585/A150 : On the metallicity of open clusters. III. (Netopil+, 2016)J/AJ/153/128 : WOCS. LXXV. Hyades&Praesepe lithium data (Cummings+, 2017)J/ApJS/233/23 : APOKASC catalog of KIC dwarfs & subgiants (Serenelli+, 2017)J/AJ/156/264 : California-Kepler Survey. VII. Planet radii (Fulton+, 2018)J/A+A/616/A10 : Open clusters GaiaDR2 HR diagrams (Gaia Collaboration, 2018)J/ApJS/239/32 : APOKASC-2 cat. of Kepler evolved stars (Pinsonneault+, 2018)J/AJ/156/45 : M-dwarf multiples in the SDSS-III/APOGEE (Skinner+, 2018)J/ApJ/862/106 : Stellar & substellar members in Coma Berenices (Tang+, 2018)J/A+A/629/A34 : APOGEE stars members of 35 star clusters (Garcia-Dias+, 2019)J/A+A/627/A117 : Equivalent widths for six M67 stars (Liu+, 2019)J/ApJ/875/29 : Sp. analysis of the CKS sample. I. (Martinez+, 2019)J/A+A/635/A8 : Differential abundances of open clusters (Casamiquela+, 2020)J/AJ/159/199 : OCCAM. IV. Open cluster abund. with APOGEE (Donor+, 2020)J/ApJ/903/55 : APOGEE parameters through 83 open clusters (Poovelil+, 2020)J/A+A/649/A147 : Spectroscopic parameters for 313 M dwarfs (Sarmento+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/917/11https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/917/11http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/917/11https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/917/11https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/917/11http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/917/11GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/917/11/table1 (stars & stellar parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/917/11/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/917/11/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/917/11/table1?GETtext/xml+votable180.050000true185.560333325.44897220.0055555555555555565/7120 6/28484 28486 284891.5062136169708525e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/917/11?format=asciiOpticalInfrareddefaultJ/ApJ/917/11/table1stars & stellar parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_2MASSb = not analyzed due to low S/Nmeta.codecharSimbadSimbad column added by the CDSmeta.ref.urlchar_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.main2MASS2MASS identifier (HHMMSSss+DDMMSSs; J2000)meta.id;meta.maincharGaiaDisplay data from Gaia DR2 (I/345) and DR3 (I/355)meta.ref.urlcharJmag[7.4/13.98] 2MASS J-band magnitudemagphot.mag;em.IR.JfloatJ-Ks[0.2/0.9] J-Ks color indexmagphot.color;em.IR.J;em.IR.KfloatGmag[8.2/17.21] Gaia G-band magnitudemagphot.mag;em.optfloatGbp-Grp[0.6/3.3]? Gaia BP-RP color indexphot.color;em.opt.B;em.opt.RfloatnullableNv[7/14] Visitsmeta.noteintRV[-0.36/2.92] Radial velocitykm/sphys.veloc;pos.heliocentricfloate_RV[0.05/0.8] RV uncertaintykm/sstat.errorfloatS/N[40/2571] Signal-to-noise ratiostat.snrintDist[81.5/92.2] Distance from Bailer-Jones+ 2018, I/347pcpos.distance;pos.heliocentricfloate_Dist[0.26/2.5] Dist uncertaintypcstat.errorfloatl_vsiniLimit flag on vsinimeta.code.error;phys.veloc.rotatcharvsini[7/40]? Rotational velocitykm/sphys.veloc.rotatfloatnullableTeff[3110/6530]? Effective temperatureKphys.temperature.effectiveintnullablelogg[4.28/5]? Log of surface gravitylog(cm.s**-2)phys.gravityfloatnullable[Fe/H][-0.01/0.08]? Log of Fe/H abundancelog(Sun)phys.abund.Fefloatnullablee_[Fe/H][0.03/0.13]? [Fe/H] uncertaintylog(Sun)stat.error;phys.abund.FefloatnullableFeI[7.4/7.5]? Mean FeI abundancephys.abund;stat.meanfloatnullable[FeI/H][-0.01/0.05]? Mean [FeI/H] abundance ratiolog(Sun)phys.abund;stat.meanfloatnullablee_[FeI/H][0.05/0.08]? Uncertainty on [FeI/H]log(Sun)stat.error;phys.abundfloatnullableAbundDisplay the abundances from Table 4meta.ref.urlcharT18Display data from Tang+ 2018, J/ApJ/862/106meta.ref.urlcharAPOGEEDisplay data from APOGEE DR16 (III/284)meta.ref.urlchar_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.mainJ/ApJ/917/11/table4FGK dwarfs line-by-line abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonElement identifierphys.atmol.ionStagecharlambda[15194.5/16665.4] Wavelength in Angstroms0.1nmem.wlfloatAbd1[7.42/7.7] log abundance for J12232820+2553400log(Sun)phys.abundfloatAbd2[7.36/7.65] log abundance for J12265103+2616018log(Sun)phys.abundfloatAbd3[7.39/7.67] log abundance for J12211561+2609140log(Sun)phys.abundfloatAbd4[7.37/7.72] log abundance for J12285643+2632573log(Sun)phys.abundfloatAbd5[7.35/7.7] log abundance for J12240572+2607430log(Sun)phys.abundfloatAbd6[7.32/7.6] log abundance for J12270627+2650445log(Sun)phys.abundfloatAbd7[7.34/7.7]? log abundance for J12214901+2632568log(Sun)phys.abundfloatnullableAbd8[7.26/7.7]? log abundance for J12204557+2545572log(Sun)phys.abundfloatnullableAbd9[7.25/7.6]? log abundance for J12215616+2718342log(Sun)phys.abundfloatnullableAbd10[7.28/7.6]? log abundance for J12234101+2658478log(Sun)phys.abundfloatnullableAbd11[7.28/7.6]? log abundance for J12255195+2646359log(Sun)phys.abundfloatnullable