J/A+A/585/A7ivo://CDS.VizieR/J/A+A/585/A7doi:10.26093/cds/vizier.35850007CDSKopytova T.G.Brandner W.Tognelli E.Prada Moroni P.G.Da Rio N.,Roeser S.Schilbach E.2019-10-10T15:59:26Z2015-12-08T08:01:21ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryultraviolet-photometryAge and mass determinations for isolated stellar objects remain model-dependent. While stellar interior and atmospheric theoretical models are rapidly evolving, we need a powerful tool to test them. Open clusters are good candidates for this role. We aim to create a fiducial sequence of stellar objects for testing stellar and atmospheric models. We complement previous studies on the Hyades multiplicity by Lucky Imaging observations with the AstraLux Norte camera. This allows us to exclude possible binary and multiple systems with companions outside 2-7AU separation and to create a "single-star sequence" for the Hyades. The sequence encompasses 250 main-sequence stars ranging from A5V to M6V. Using the "Tool for Astrophysical Data Analysis" (TA-DA), we create various theoretical isochrones applying different combinations of interior and atmospheric models. We compare the isochrones with the observed Hyades single-star sequence on J vs. J-Ks, J vs. J-H and Ks vs. H-Ks color-magnitude diagrams. As a reference we also compute absolute fluxes and magnitudes for all stars from X-ray to mid-infrared based on photometric measurements available in the literature (ROSAT X-ray, GALEX UV, APASS gri, 2MASS JHKs, and WISE W1 to W4). We find that combinations of both PISA and DARTMOUTH stellar interior models with BT-Settl 2010 atmospheric models describe the observed sequence well. We use PISA in combination with BT-Settl 2010 models to derive theoretical predictions for physical parameters (Teff, mass, logg) of 250 single stars in the Hyades. The full sequence covers the mass range 0.13 to 2.3M_{sun}_, and effective temperatures between 3060K and 8200K. Conclusions. Within the measurement uncertainties, the current generation of models agree well with the single-star sequence. The primary limitations are the uncertainties in the measurement of the distance to individual Hyades members, and uncertainties in the photometry. Gaia parallaxes, photometry and spectroscopy will greatly reduce the uncertainties in particular at the lowest mass range, and will enable us to test model predictions with greater confidence. Additionally, a small (~0.05mag) systematic offset can be noted on J vs. J-K and K vs. H-K diagrams - the observed sequence is shifted to redder colors from the theoretical predictions.2016A&A...585A...7Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/585/A7CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/280 : All-Sky Compiled Cat. of 2.5 million stars (Kharchenko+ 2009)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/ApJ/448/683 : Hyades RASS observations (Stern+ 1995)J/A+A/498/949 : 1253 F-K dwarfs in open clusters velocities (Mermilliod+, 2009)J/A+A/531/A92 : Deep all-sky census of the Hyades (Roeser+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/585/A7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/585/A7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/585/A7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/585/A7https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/585/A7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/585/A7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/585/A7/table2 (Absolute JHKs (2MASS) photometry and physical parameters of the Hyades single-star sequence members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/585/A7/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/585/A7/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/585/A7/table2?GETtext/xml+votable180.050000true30.5979576137.496318820.0055555555555555565/5869 5875 5881 5883-5884 5886 6/78 95 211 247 272-273 287 309 311 318 320 322-326 333-337 339-342 344-345 348-349 351 353 355 357-358 368 373 375 378 383 401 407 450 462 470 472 477-478 499 501 507 540 583 712 770 795 803 835 882 889-890 917 989 1020 1024-1025 1033 1035 1038 1042-1044 1057-1058 1060 1062 1075 1077 1096 1158 1180 1199 1210-1211 1232 1564 1567 1577 1614 1720 1839 2328 2335 2350 2391 17857 17871 21440 22663 22760 22959 23169 23283 23313 23332 23339 23344 23355 23368 23405 23416 23444 23450 23454 23463 23487 23489-23490 23492-23494 23497-23499 23504 23511 23513-23514 23518 23523 23529 23542 23548-23549 23551 23663 23727 24068 24099 24104 24110 24129 24137 24175 24192 24194-24195 24201 24207 24218 24223-24224 24232-24234 24236 24242 24251 24266 24298 24310 24319 24344 24491 245023.322582951404819e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/585/A7?format=asciiInfraredUVdefaultJ/A+A/585/A7/table2Absolute JHKs (2MASS) photometry and physical parameters of the Hyades single-star sequence membersSimbadNameSimbad column added by the CDSmeta.idchare_gMAG? APASS g uncertaintymagphys.magAbsfloatnullableResResolutionAUpos.angResolutionfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDHyades ID from Roeser et al. (2011, Cat. J/A+A/531/A92)meta.id;meta.mainintRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainplxParallaxmaspos.parallaxfloate_plxParallax uncertaintymasstat.error;pos.parallaxfloatLX? ROSAT X-ray absolute flux (Stern et al. 1995, Cat. J/ApJ/448/683)mW.m**-2phot.flux;em.X-rayfloatnullablee_LX? ROSAT X-ray standard uncertaintymW.m**-2stat.errorfloatnullableFUV? GALEX far-UV absolute magnitude (Martin et al. 2005, IAUS, 216, 221)magphys.magAbsfloatnullablee_FUV? GALEX far-UV standard uncertaintymagstat.errorfloatnullableNUV? GALEX near-UV absolute magnitude (Martin et al. 2005, IAUS, 216, 221)magphys.magAbsfloatnullablee_NUV? GALEX near-UV standard uncertaintymagstat.errorfloatnullableBmag? Johnson B magnitude (from ASCC-2.5, Cat. I/280)magphot.mag;em.opt.Bfloatnullablee_Bmag? Johnson B standard uncertaintymagstat.error;phot.mag;em.opt.BfloatnullableVmag? Johnson V magnitude (from ASCC-2.5, Cat. I/280)magphot.mag;em.opt.Vfloatnullablee_Vmag? Johnson V standard uncertaintymagstat.error;phot.mag;em.opt.VfloatnullablegMAG? APASS g absolute magnitude (Henden et al., 2015AAS...22533616H)magphys.magAbsfloatnullablerMAG? APASS r absolute magnitude (Henden et al., 2015AAS...22533616H)magphys.magAbsfloatnullablee_rMAG? APASS r uncertaintymagphys.magAbsfloatnullableiMAG? APASS r absolute magnitude (Henden et al., 2015AAS...22533616H)magphys.magAbsfloatnullablee_iMAG? APASS r uncertaintymagphys.magAbsfloatnullableJMAG2MASS J absolute magnitude (Skrutsie et al. 2006, Cat. VII/233)magphys.magAbsfloate_JMAG2MASS J uncertaintymagphys.magAbsfloatHMAG2MASS H absolute magnitude (Skrutsie et al. 2006, Cat. VII/233)magphys.magAbsfloate_HMAG2MASS H uncertaintymagphys.magAbsfloatKsMAG2MASS Ks absolute magnitude (Skrutsie et al. 2006, Cat. VII/233)magphys.magAbsfloate_KsMAG2MASS Ks uncertaintymagphys.magAbsfloatW1MAG? WISE band1 absolute magnitudemagphys.magAbsfloatnullablee_W1MAG? WISE band1 uncertaintymagphys.magAbsfloatnullableW2MAG? WISE band2 absolute magnitudemagphys.magAbsfloatnullablee_W2MAG? WISE band2 uncertaintymagphys.magAbsfloatnullableW3MAG? WISE band3 absolute magnitudemagphys.magAbsfloatnullablee_W3MAG? WISE band3 uncertaintymagphys.magAbsfloatnullableW4MAG? WISE band4 absolute magnitudemagphys.magAbsfloatnullablee_W4MAG? WISE band4 uncertaintymagphys.magAbsfloatnullableMassEstimated masssolMassphys.massfloatTeffEstimated effective temperatureKphys.temperature.effectiveintloggEstimated surface gravitylog(cm.s**-2)phys.gravityfloat2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlchar