J/A+A/660/A131ivo://CDS.VizieR/J/A+A/660/A131doi:10.26093/cds/vizier.36600131CDSMejias A.Minniti D.Alonso-Garcia J.Beamin J.CSaito R.K.Solano E.2022-06-13T12:11:01Z2022-04-29T09:50:14ZCDS support team

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

cds-question@unistra.frgalaxy-planesmilky-way-galaxym-starsRed dwarf stars represent 75% of stars in the Milky Way, and can be studied in great detail in the solar neighborhood where the sample is more complete. We intend to better characterize red-dwarf candidates selected from the Gaia Catalog of Nearby Stars using optical and near-infrared multi-filter photometry from VVVX, DECaPS, Pan-STARRS and WISE surveys. We performed a cross-match between the positions of a color-selected sample of M dwarfs in the VVVX Survey and the Gaia Early Data Release 3 sub-catalog of nearby stars. We then explored their stellar parameters comparing the spectral energy distribution of each object with the BT-Settl CIFIST theoretical models using the Virtual Observatory SED Analyzer (VOSA), and adopting a solar metallicity value, we obtained effective temperatures and logg. Radii were also obtained from the computed luminosities and Teff using the Stefan-Boltzmann equation. Masses and ages were computed for some of the objects ising evolutionary tracks and isochrones. Additional mass estimations were obtained with the MKs-M* relation. Spectral types were computed with VOSA fitting empirical spectral libraries. We then validated the spectral types and effective temperatures of two of our objects with spectra obtained with TSPEC/SOAR, and of our total amount of stars through a direct comparison with an independent sample from literature. We revised the objects in our sample and compared their proper motion vectors with other sources within 30" to identify possible companions and probed their Re-normalised Unit Weight Error (RUWE) values to identify unresolved companions. We present a catalog with physical parameters for 99 low-mass objects with distances from 43.2 to 111.3pc. Effective temperatures range from 2500 to 3400K, with the majority of stars in the sample compatible with being M4 dwarfs. We obtained good agreement between the stellar parameters computed with VOSA and the estimations from observed spectra, and also when comparing with an independent sample from the literature. Distribution of masses obtained with VOSA is concentrated toward the very-low mass regime. Eight objects present values of RUWE>=1.4, and seven are consistent with being in binary systems.2022A&A...660A.131Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/660/A131CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)J/A+A/649/A6 : Gaia Catalogue of Nearby Stars - GCNS (Gaia collaboration, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/660/A131https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/660/A131http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/660/A131https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/660/A131https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/660/A131http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/660/A131GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/660/A131/table1 (Astrometric information for 99 low-mass stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/660/A131/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/660/A131/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/660/A131/table1?GETtext/xml+votable180.050000true108.9992228314-18.716691453950.005555555555555556Cone search capability for table J/A+A/660/A131/table5 (Positions and Gaia photometry for co-moving objects not included in the low-mass stars sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/660/A131/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/660/A131/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/660/A131/table5?GETtext/xml+votable180.050000true113.41650069773-25.087028853720.0055555555555555566/20830 21530 37336 37358 37710 37827 37890 37917 37919 37942 37948 37984 38031-38033 38044 38406 38414 38416 38435 38437 38439 38537-38538 38540 38560 38570-38571 39231 39236 39264 39285 39368-39369 39390 39746 39752 39885 39896 39898 40064 40066 40096 40105 40449 40456 40459 40480 40484 40588 41585 41590 41592 41638 41664 41705 41709 41740 41832 41836 41844 41873-41874 42138 42145 42161 42185 42191 42197 42239 42338 42342 42344 42348 42354 42370 42388 42424 42428 42514 42516 42524 42529 42562 42564 42566 43011 43030 43033 43035 43049 43053 43073-43074 430803.830199579824256e-20 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/660/A131?format=asciidefaultJ/A+A/660/A131/table1Astrometric information for 99 low-mass starsRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAllDisplay data in tables 1-4 for this sourcemeta.ref.urlcharGaiaEDR3Gaia EDR3 identificationmeta.id;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPlxParallaxmaspos.parallaxfloate_PlxParallax errormasstat.error;pos.parallaxfloatpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloate_pmRAError on Proper motion along RAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDEError on Proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decfloatRUWERe-normalised Unit-Weight Errorstat.errorfloatJ/A+A/660/A131/table2Optical photometry for 99 low-mass starsrmagDECaPS r magnitudemagphot.mag;em.opt.RfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAllDisplay data in tables 1-4 for this sourcemeta.ref.urlcharGaiaEDR3Gaia EDR3 identificationmeta.id;meta.mainGmagGaia G magnitudemagphot.mag;em.optfloate_Gmag? Error in Gaia G magnitudemagstat.error;phot.magfloatnullableBPmag? Gaia BP magnitudemagphot.mag;em.opt.Bfloatnullablee_BPmag? Error in Gaia BP magnitudemagstat.error;phot.magfloatnullableRPmag? Gaia RP magnitudemagphot.mag;em.opt.Rfloatnullablee_RPmag? Error in Gaia RP magnitudemagstat.error;phot.magdoublenullablegmagDECaPS g magnitudemagphot.mag;em.opt.Bfloate_gmag? Error in DECaPS g magnitudemagstat.error;phot.magdoublenullablee_rmag? Error in DECaPS r magnitudemagstat.error;phot.magfloatnullableimagDECaPS i magnitudemagphot.mag;em.opt.Ifloate_imag? Error in DECaPS i magnitudemagstat.error;phot.magfloatnullablezmagDECaPS z magnitudemagphot.mag;em.opt.Ifloate_zmag? Error in DECaPS z magnitudemagstat.error;phot.magdoublenullableYmagDECaPS Y magnitudemagphot.mag;em.IR.Jfloate_Ymag? Error in DECaPS Y magnitudemagstat.error;phot.magfloatnullableJ/A+A/660/A131/table3Near-IR and IR photometry for 99 low-mass starsKsmagVVVX Ks magnitudemagphot.mag;em.IR.KfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAllDisplay data in tables 1-4 for this sourcemeta.ref.urlcharGaiaEDR3Gaia EDR3 identificationmeta.id;meta.mainJmagVVVX J magnitudemagphot.mag;em.IR.Jfloate_JmagError in VVVX J magnitudemagstat.error;phot.magfloatHmagVVVX H magnitudemagphot.mag;em.IR.Hfloate_HmagError in VVVX H magnitudemagstat.error;phot.magfloate_KsmagError in VVVX Ks magnitudemagstat.error;phot.magfloatW1mag? WISE W1 magnitudemagphot.mag;em.IR.3-4umfloatnullablee_W1mag? Error in WISE W1 magnitudemagstat.error;phot.magfloatnullableW2mag? WISE W2 magnitudemagphot.mag;em.IR.4-8umfloatnullablee_W2mag? Error in WISE W2 magnitudemagstat.error;phot.magfloatnullableJ/A+A/660/A131/table4Stellar parameters for 99 low-mass starsAge? Ageyrtime.agefloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 identificationmeta.id;meta.mainDistDistancepcpos.distancefloate_DistError in distancepcstat.errorfloatTeffEffective temperatureKphys.temperature.effectivefloate_TeffError in effective temperatureKstat.error;phys.temperature.effectivefloat[Fe/H]Metallicityphys.abund.Zfloatlogglog of surface gravitylog(cm.s**-2)phys.gravityfloate_loggError in log of surface gravitylog(cm.s**-2)stat.errorfloatSpTypeMK spectral typesrc.spTypecharRadRadiusarcsecphys.angSize;srcfloate_RadError in radiusarcsecstat.errorfloatMass? MasssolMassphys.massfloatnullableBMass? Upper limit of masssolMassphys.mass;stat.maxfloatnullablebMass? Lower limit of masssolMassphys.mass;stat.minfloatnullableMassMann? Mass from Mass-Luminosity relation (Mann et al., 2019ApJ...871...63M)solMassphys.massfloatnullablee_MassMann? Error in mass from Mass-Luminosity relationsolMassstat.errorfloatnullableBAge? Upper limit in ageyrtime.age;stat.maxfloatnullablebAge? Lower limit in ageyrtime.age;stat.minfloatnullableFlagFlag (1)meta.code.errorcharRefAdditional refereces for the source (2)meta.ref;pos.framecharAllDisplay data in tables 1-4 for this sourcemeta.ref.urlcharJ/A+A/660/A131/table5Positions and Gaia photometry for co-moving objects not included in the low-mass stars samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 identificationmeta.id;meta.mainRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainGmagGaia G magnitudemagphot.mag;em.optdoublee_GmagError on Gaia G magnitudemagstat.error;phot.magdoubleBPmag? Gaia BP magnitudemagphot.mag;em.opt.Bdoublenullablee_BPmag? Error on Gaia BP magnitudemagstat.error;phot.magdoublenullableRPmag? Gaia RP magnitudemagphot.mag;em.opt.Rdoublenullablee_RPmag? Error on Gaia RP magnitudemagstat.error;phot.magdoublenullable