J/AJ/163/278ivo://CDS.VizieR/J/AJ/163/278doi:10.26093/cds/vizier.51630278CDSNisak A.H.White R.J.Yep A.Henry T.J.Paredes L.James H.-S.,Jao W.-C.2022-11-15T07:54:35Z2022-11-02T09:00:22ZCDS support team

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

cds-question@unistra.fropen-star-clustersvisible-astronomyspectroscopytrigonometric-parallaxproper-motionsmetallicityeffective-temperatureIC2391 and IC2602 are important benchmarks for testing early star and planet evolution theories, both structural and dynamical, because they are the nearest open clusters with ages of ~50Myr. We refine membership lists for these clusters by identifying candidate members using Gaia DR2 kinematic and distance information. We identify 451 candidate members of IC2602 and 350 candidate members of IC2391. If confirmed, this would increase the known populations of these clusters by 275% and 130%, respectively. We use CHIRON on the CTIO/SMARTS 1.5m telescope via fiber mode which yields a resolution of 27400 to acquire high-resolution spectra of 26 new candidate cluster members brighter than G=13 magnitude, as well as an additional 12 previously known members. Measures of lithium, H{alpha}, stellar properties (Teff, logg, [Fe/H]), radial velocities, and vsini values from these spectra are used to confirm cluster membership. We find that 37 of 38 stars we observe are bona fide cluster members, of which four are new candidate photometric binaries and 10 are new candidate spectroscopic binaries.2022AJ....163..278Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/278CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/simbad : Simbad objects catalogue (M.Wenger 2000)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)J/A+AS/126/81 : IC 2602 VRI photometry (Foster+ 1997)J/A+AS/126/357 : Members of IC 2391 (Rolleston+ 1997)J/ApJS/134/103 : Low-mass members of IC 2391 (Barrado y Navascues+, 2001)J/A+A/372/862 : Lithium abundances in IC 2602 and IC 2391 (Randich+, 2001)J/A+A/410/671 : X-ray emission in cool main sequence stars (Messina+, 2003)J/MNRAS/355/959 : Proper motions of IC 2391 possible members (Dodd+, 2004)J/A+A/461/509 : Membership and spectroscopy of IC 2391 (Platais+, 2007)J/AJ/133/2524 : Spectra of young nearby stars (White+, 2007)J/ApJ/706/1484 : Photometry and spectroscopy in IC 2391 (Boudreault+, 2009)J/A+A/501/553 : Equivalent widths of IC 2602 & IC 2391 stars (D'Orazi+, 2009)J/A+A/498/949 : Velocities of 1253 F-K dwarfs in clusters (Mermilliod+, 2009)J/MNRAS/399/2146 : Orbits of open clusters in the Galaxy (Wu+, 2009)J/MNRAS/431/1005 : IC 2391 and Argus young stars (de Silva+, 2013)J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)J/AJ/147/69 : Radial velocities in Be 44, Be 81, and NGC 6802 (Hayes+, 2014)J/MNRAS/458/4530 : Chandra Galactic Bulge Survey (Wevers+, 2016)J/AJ/153/128 : WOCS. LXXV. Hyades&Praesepe stellar Li data (Cummings+, 2017)J/A+A/608/A95 : GES; multi-line spectroscopic binary candidates (Merle+, 2017)J/A+A/601/A70 : GES; pre-main-sequence clusters [Fe/H] (Spina+, 2017)J/ApJ/836/77 : Library of high-S/N optical spectra of FGKM stars (Yee+, 2017)J/A+A/618/A93 : Gaia DR2 open clusters in the Milky Way (Cantat-Gaudin+, 2018)J/A+A/616/A10 : 46 open cluster GaiaDR2 HR diagrams (Gaia Collaboration, 2018)J/ApJ/856/23 : BANYAN. XI. The BANYAN {Sigma} algorithm (Gagne+, 2018)J/A+A/612/A99 : Gaia-ESO Survey in 7 open star cluster fields (Randich+, 2018)J/AJ/157/85 : The CIDA Variability Survey of Orion OB1. II. (Briceno+, 2019)J/AJ/158/163 : Li abundance values for stars in NGC 6819 (Deliyannis+, 2019)J/AJ/158/54 : New Taurus members stellar to planetary masses (Esplin+, 2019)J/A+A/628/A66 : alpha Persei, Pleiades and Praesepe clusters (Lodieu+, 2019)J/A+A/643/A71 : Members for 20 open clusters (Gutierrez Albarran+, 2020)J/AJ/160/44 : Upper Scorpius spectroscopy and photometry (Luhman+, 2020)J/AJ/162/176 : The solar neighborhood. XLVIII. (Paredes+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/278https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/278http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/278https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/278https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/278http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/278GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/163/278/table3 (Measurements for 26 new candidate members of IC 2602 and IC 2391)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/278/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/278/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/278/table3?GETtext/xml+votable180.050000true160.5131836-65.34969670.005555555555555556Cone search capability for table J/AJ/163/278/table4 (Measurements for 12 known members of IC 2602 and IC 2391)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/278/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/278/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/278/table4?GETtext/xml+votable180.050000true160.5295164-64.76884420.005555555555555556Cone search capability for table J/AJ/163/278/tablea (Refined membership list of IC 2391 and IC 2602)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/278/tablea?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/278/tablea?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/278/tablea?GETtext/xml+votable180.050000true130.60560143707-53.1138831721400140.0055555555555555565/9306-9310 9317 9328-9330 9332 9445-9447 9452 9797 6/37183 37199 37211 37214-37215 37218-37219 37221-37223 37244 37246-37247 37273 37276-37277 37279 37324-37325 37327 37336 37345 37348 37671 37678-37680 37688 37690 37765 37769 37772-37773 37775 37778-37779 37797-37799 37812-37813 37815-37817 37819-37821 37823 37826-37827 37832 37834 37836 37838 37856-37858 37865-37867 37881 37922-37923 39199 39233 392351.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/163/278?format=asciiOpticaldefaultJ/AJ/163/278/table3Measurements for 26 new candidate members of IC 2602 and IC 2391recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharClusterCluster identifiermeta.id.parentcharIDInternal identifiermeta.id;meta.maincharf_IDl Flag on ID (G1)meta.codechar2MASS2MASS identifiermeta.id.crosscharRVel[-26.7/56] Radial velocity from CHIRONkm/sphys.veloc;pos.heliocentricfloate_RVel[0.09/0.3] Error on RVelkm/sstat.error;spect.dopplerVelocfloatvsini[4.6/27.2] Rotational velocity from CHIRONkm/sphys.veloc.rotatfloate_vsini[0.7/6.6] Error on vsinikm/sstat.error;phys.veloc.rotatfloatl_EW-Li[<] Limit flag on EW-Limeta.code.error;spect.line.eqWidthcharEW-Li[0.01/0.35] CHIRON Equivalent Width for Li-line ({AA})0.1nmspect.line.eqWidthfloate_EW-Li[0.01/0.03] Error on EW-Li0.1nmstat.error;spect.line.eqWidthfloatEW-Ha[-1.3/0.93] CHIRON Equivalent Width for H{alpha}-line ({AA})0.1nmspect.line.eqWidthfloate_EW-Ha[0.01/0.05] Error on EW-Ha0.1nmstat.error;spect.line.eqWidthfloatTeff[3257/6465] Effective temperature from SpecMatchKphys.temperature.effectiveinte_Teff[70/110] Error on TeffKstat.error;phys.temperature.effectiveintlogg[3.86/4.86] Surface gravity from SpecMatchphys.gravityfloate_logg[0.12] Error on loggstat.errorfloatFe/H[-0.53/0.19] Metallicity from SpecMatchphys.abund.Zfloate_Fe/H[0.09] Error on Fe/Hstat.error;phys.abund.Fefloat_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainJ/AJ/163/278/table4Measurements for 12 known members of IC 2602 and IC 2391SimbadNameSimbad column added by the CDSmeta.idcharnullablef_IDFlag on ID (G1)meta.codecharRVel[13.8/39.9] Radial velocitykm/sphys.veloc;pos.heliocentricfloate_RVel[0.1/0.2] Error on RVelkm/sstat.error;spect.dopplerVelocfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster identifiermeta.id.parentcharIDInternal identifiermeta.id;meta.maincharRVel-l[13.8/31.7] Radial velocity from Litteraturekm/sphys.veloc;pos.heliocentricfloatr_RVel-lReference used for RVel-l (1)meta.ref;pos.framecharvsini[7.8/20.8] Rotational velocitykm/sphys.veloc.rotatfloate_vsini[0.6/2] Error on vsinikm/sstat.error;phys.veloc.rotatfloatl-vsini-l[<] Limit flag on vsini-lmeta.code.errorcharvsini-l[8/20.7] Rotational velocity from litteraturekm/sphys.veloc.rotatfloatr_vsini-lReference used for vsini-l (1)meta.ref;pos.framecharEW-Li[0.07/0.36] Equivalent Width for Li-line ({AA})0.1nmspect.line.eqWidthfloate_EW-Li[0/0.02] Error on EW-Li0.1nmstat.error;spect.line.eqWidthfloatEW-Ha[-0.12/0.91] Equivalent Width for H{alpha}-line ({AA})0.1nmspect.line.eqWidthfloate_EW-Ha[0.01/0.02] Error on EW-Ha0.1nmstat.error;spect.line.eqWidthfloatTeff[4614/6150] Effective temperatureKphys.temperature.effectiveinte_Teff[110] Error on TeffKstat.error;phys.temperature.effectiveintTeff-l[4520/5900]? Effective temperature from litteratureKphys.temperature.effectiveintnullabler_TeffReference used for Teff (1)meta.ref;pos.framecharlogg[4.09/4.6] Surface gravityphys.gravityfloate_logg[0.12] Error on loggstat.errorfloatFe/H[-0.54/0.15] Metallicityphys.abund.Zfloate_Fe/H[0.09] Error on Fe/Hstat.error;phys.abund.Fefloat_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainnullableJ/AJ/163/278/tableaRefined membership list of IC 2391 and IC 2602GmagGaia G apparent magnitudemagphot.mag;em.opt.VdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster identifiermeta.id.parentcharGAIAGaia DR2 identifiermeta.id;meta.mainchar2MASS2MASS identifiermeta.id.crosscharRA_ICRSRight ascension (ICRS) at Ep=2015.5 (ra)degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2015.5 (dec)degpos.eq.dec;meta.mainRAHour of Right Ascensionpos.eq.raDEDegree of Declinationpos.eq.decplxGaia DR2 parallaxmaspos.parallax.trigfloate_plxMean error in plxmasstat.error;pos.parallaxfloatpmRAGaia DR2 Proper motion in Right Ascensionmas/yrpos.pm;pos.eq.rafloate_pmRAMean error in pmRAmas/yrstat.error;pos.pm;pos.eq.rafloat_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decfloate_pmDEMean error in pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatBP-RP? Gaia BP-RP colormagphot.color;em.opt.B;em.opt.Rdoublenullable