J/A+A/575/A4ivo://CDS.VizieR/J/A+A/575/A4doi:10.26093/cds/vizier.35750004CDSFrasca A.Biazzo K.Lanzafame A.C.Alcala J.M.Brugaletta E.,Klutsch A.Stelzer B.Sacco G.G.Spina L.Jeffries R.D.Montes D.,Alfaro E.J.Barentsen G.Bonito R.Gameiro J.F.Lopez-Santiago J.,Pace G.Pasquini L.Prisinzano L.Sousa S.G.Gilmore G.Randich S.,Micela G.Bragaglia A.Flaccomio E.Bayo A.Costado M.T.,Franciosini E.Hill V.Hourihane A.Jofre P.Lardo C.Maiorca E.,Masseron T.Morbidelli L.Worley C.C.2017-09-19T14:21:21Z2015-02-10T07:07:19ZCDS support team

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

cds-question@unistra.fropen-star-clusterspre-main-sequence-starsradial-velocityline-intensitiesWe use the fundamental parameters (effective temperature, surface gravity, lithium abundance, and radial velocity) delivered by the GES consortium in the first internal data release to select the members of Gamma Vel and Cha I among the UVES and GIRAFFE spectroscopic observations. A total of 140 Gamma Vel members and 74 Cha I members were studied. The procedure adopted by the GES to derive stellar fundamental parameters provided also measures of the projected rotational velocity (vsini). We calculated stellar luminosities through spectral energy distributions, while stellar masses were derived by comparison with evolutionary tracks. The spectral subtraction of low-activity and slowly rotating templates, which are rotationally broadened to match the vsini of the targets, enabled us to measure the equivalent widths (EWs) and the fluxes in the H{alpha} and H{beta} lines. The H{alpha} line was also used for identifying accreting objects, on the basis of its equivalent width and the width at the 10% of the line peak (10%W), and for evaluating the mass accretion rate (M_acc_). The distribution of vsini for the members of Gamma Vel displays a peak at about 10km/s with a tail toward faster rotators. There is also some indication of a different vsini distribution for the members of its two kinematical populations. Most of these stars have H{alpha} fluxes corresponding to a saturated activity regime. We find a similar distribution, but with a narrower peak, for Cha I. Only a handful of stars in Gamma Vel display signatures of accretion, while many more accretors were detected in the younger Cha I, where the highest H{alpha} fluxes are mostly due to accretion, rather than to chromospheric activity. Accreting and active stars occupy two different regions in a T_eff-flux diagram and we propose a criterion for distinguishing them. We derive M_acc in the ranges 10^-11^-10^-9^M_{sun}_/yr and 10^-10^-10^-7^M_{sun}_/yr for Gamma Vel and Cha I accretors, respectively.2015A&A...575A...4Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/575/A4CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/A+A/563/A94 : Kinematics of the Gamma Vel cluster (Jeffries+, 2014)J/A+A/461/669 : XMM observations of Cha I dark cloud (Robrade+, 2007)J/ApJ/675/1375 : IRAC/MIPS photometry in Cha I (Luhman+, 2008)J/ApJ/686/1195 : IR photometry in the {gamma} Vel cluster (Hernandez+, 2008)J/MNRAS/393/538 : Stellar association around gamma Vel (Jeffries+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/575/A4https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/575/A4http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/575/A4https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/575/A4https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/575/A4http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/575/A4GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/575/A4/table2 (Parameters of the Gamma Vel members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/575/A4/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/575/A4/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/575/A4/table2?GETtext/xml+votable180.050000true121.6829167-47.53144440.005555555555555556Cone search capability for table J/A+A/575/A4/table3 (Parameters of the Cha I members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/575/A4/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/575/A4/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/575/A4/table3?GETtext/xml+votable180.050000true164.1268333-77.194250.005555555555555556Cone search capability for table J/A+A/575/A4/table4 (Elodie templates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/575/A4/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/575/A4/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/575/A4/table4?GETtext/xml+votable180.050000true293.132957826.39059420.0055555555555555565/9239 6/15 346 373 382 684 748 798 815 915 1015 1033 1249 1283 1341 1408 1556 1642 2133 2194 2202 2282 2317 2650 2678 2737 2921 2923 2997 3044 3064 3077 3085 3094 3199 3229 3258 3390 3494 3618 3623 3662 3712 3970 4079 4129 4376 4526 4574 4905 5009 5154 5304 5420 5534 5587 5718 5853 6049 6058 6256 6361 6672 7064 7101 7264 7354 7650 7734 7763 8767 8843 8845 8887 8985 9125 9216 9327 9476 9717 9753 9813 9843 9873-9874 10055 10375 10696 10817 11177 11394 11412 11473 12208 12332 12424 12451 12464 12526 12544 12604 12621 12704 12890 12962 13025 13028 13075 13158 13277 13301 13332 13392 13633 13777 13882 14151 14180 14278 14358 14385 14416 14630 14690 14726 14743 14767 14779 14878 15118 15127 15174 15249 15311 15364 15481 15597 15715 15730 16069 16115 16186 16213 16350 17171 17245 17256 17266 17425 17606 17847 17860 18002 18067 18139 18204 18236 18425 18553 18712 18821 18911 18978 18990 19045 19179 19237 19312 19531 19912 19923 19941 20110 20145 20278 20313 20390 20440 20446 20896 21177 21273 21285 21307 21484 21696 21901 21946 21953 22120 22134 22171 22180 22199 22205 22220 22252 22257 22300 22309 22330 22355 22654 22709 22807 22818 22823 22849 22878 22932 23161 23190 23201 23339 23423 23540 23547 23592 23621 23623 23695 23765 23822 23996 24016 24029 24497 24570 25567 25828 25846 25869 25930 25966 26180 26552 26575 26583 27088 27374 27788 28094 28336 28343 28494 28646 29548 29765 30176 30274 30286 30331 30339 30375 30407 30440 30529 30576 30665 30709 30825 30878 30965 31087 31094 31452 31494 31592 31683 31751 31757 31781 31789 31821 31874 31940 32185 32192 32297 32352 32468 32554 32645 32757 36341 37122-37123 37128-37129 39194 39205 39216-39218 40932 44284 44771 49063 49114https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/575/A4?format=asciiOpticaldefaultJ/A+A/575/A4/table2Parameters of the Gamma Vel membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS designation (HHMMSSss+DDMMSSs, J2000)meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainHRV? Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullableSpTSpectral type (MK or HD)src.spTypecharTeff[3257/6501] Effective temperatureKphys.temperature.effectiveinte_Teff[30/498] Effective temperature errorKstat.error;phys.temperature.effectiveintvsini[0/176] Projected rotational velocitykm/sphys.veloc.rotatfloate_vsini[0.5/55] Projected rotational velocity errorkm/sstat.error;phys.veloc.rotatfloatEWHa[0/223]? H{alpha} equivalent width ({AA})0.1nmspect.line.eqWidth;em.line.Halphafloatnullablee_EWHa[0.01/16]? H{alpha} equivalent width error0.1nmstat.errorfloatnullableFHa? H{alpha} fluxmW.m**-2phot.flux;em.line.Halphadoublenullablee_FHa? H{alpha} flux errormW.m**-2stat.errordoublenullablebSimbad column added by the CDSmeta.ref.urlcharr[0/3] Veilingphys.absorptionfloate_r[0/0.6] Veiling errorstat.errorfloatW10Ha[98/567]? H{alpha} full width at 10% of the peak levelkm/sspect.line.widthfloatnullablee_W10Ha[0/116]? Error of W10Hakm/sstat.errorfloatnullableL[0.04/5.2]? Stellar luminositysolLumphys.luminosityfloatnullablee_L[0.008/2.3]? Stellar luminosity errorsolLumstat.errorfloatnullableM[0.2/1.6]? Stellar masssolMassphys.massfloatnullableMacc1[-11/-7]? Log of mass accretion rate from W10Halog(solMass.yr**-1)phys.mass.lossfloatnullableMacc2[-11/-7]? Log of mass accretion rate from EWHalog(solMass.yr**-1)phys.mass.lossfloatnullableS[GU] Spectrograph (G=GIRAFFE, U=UVES)meta.id;instrcharNoteNote on star (1)meta.notechar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/575/A4/table3Parameters of the Cha I membersr[0/3] Veilingphys.absorptionfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS designation (HHMMSSss+DDMMSSs, J2000)meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainHRV? Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullableSpTSpectral type (MK or HD)src.spTypecharTeff[3257/6501] Effective temperatureKphys.temperature.effectiveinte_Teff[30/498] Effective temperature errorKstat.error;phys.temperature.effectiveintvsini[0/176] Projected rotational velocitykm/sphys.veloc.rotatfloate_vsini[0.5/55] Projected rotational velocity errorkm/sstat.error;phys.veloc.rotatfloatEWHa[0/223]? H{alpha} equivalent width ({AA})0.1nmspect.line.eqWidth;em.line.Halphafloatnullablee_EWHa[0.01/16]? H{alpha} equivalent width error0.1nmstat.errorfloatnullableFHa? H{alpha} fluxmW.m**-2phot.flux;em.line.Halphadoublenullablee_FHa? H{alpha} flux errormW.m**-2stat.errordoublenullablebSimbad column added by the CDSmeta.ref.urlchare_r[0/0.6] Veiling errorstat.errorfloatW10Ha[98/567]? H{alpha} full width at 10% of the peak levelkm/sspect.line.widthfloatnullablee_W10Ha[0/116]? Error of W10Hakm/sstat.errorfloatnullableL[0.04/5.2]? Stellar luminositysolLumphys.luminosityfloatnullablee_L[0.008/2.3]? Stellar luminosity errorsolLumstat.errorfloatnullableM[0.2/1.6]? Stellar masssolMassphys.massfloatnullableMacc1[-11/-7]? Log of mass accretion rate from W10Halog(solMass.yr**-1)phys.mass.lossfloatnullableMacc2[-11/-7]? Log of mass accretion rate from EWHalog(solMass.yr**-1)phys.mass.lossfloatnullableS[GU] Spectrograph (G=GIRAFFE, U=UVES)meta.id;instrcharNoteNote on star (1)meta.notechar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/575/A4/table4Elodie templatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharSpTSpectral type in MK or HDsrc.spTypecharTeff[2979/9164] Effective temperatureKphys.temperature.effectiveintlogg[-0.5/5.2] Logarithm of gravitylog(cm.s**-2)phys.gravityfloat[Fe/H][-2.8/1.1] Iron abundance relative to the Sunlog(Sun)phys.abund.FefloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPosition from Simbad (declination part)degpos.eq.dec;meta.mainJ/A+A/575/A4/table5H{beta} equivalent widths and fluxes from UVES spectra2MASS2MASS designationmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEWHb[0.03/17] H{beta} equivalent width ({AA})0.1nmspect.line.eqWidth;em.line.Hbetafloate_EWHb[0.01/2] H{beta} equivalent width error0.1nmstat.errorfloatFHbH{beta} fluxmW.m**-2phot.flux;em.line.Hbeta;spect.linedoublee_FHbH{beta} flux errormW.m**-2stat.errordoubleClusterCluster name (Cha I or Gamma Vel)meta.id.parentchar