J/MNRAS/518/662ivo://CDS.VizieR/J/MNRAS/518/662doi:10.26093/cds/vizier.75180662CDSBrandner W.Calissendorff P.Kopytova T.2024-10-18T20:16:32Z2022-12-30T09:47:09ZCDS support team

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

cds-question@unistra.fropen-star-clustersphotometryvisible-astronomystellar-distanceBased on GAIA EDR3, we revisit and update our sample of bonafide single stars in the Hyades open cluster. The small observational uncertainties in parallax and photometry of EDR3 result in a tightly defined stellar sequence, which is ideal for the testing and calibration of theoretical stellar evolutionary tracks and isochrones. We benchmark the solar-scaled MESA evolutionary models against the single star sequence. We find that the non-rotating MESA models for [Fe/H]=+0.25 provide a good fit for stars with masses above 0.85, and very low mass stars below 0.25M_{sun}_. For stars with masses between 0.25 and 0.85M_{sun}_the models systematically under predict the observed stellar luminosity. One potential limitation of the models for partially convective stars more massive than 0.35M_{sun}_is the prescription of (superadiabatic) convection with the mixing-length theory parameter {alpha}_ML_ tuned to match the Solar model. Below 0.35M_{sun}_, the increased scatter in the stellar sequence might be a manifestation of the convective kissing instability, which is driven by variations in the ^3^He nuclear energy production rate due to instabilities at the convective core to envelope boundary. For a Hyades-like stellar population, the application of solar-scaled models to subsolar mass stars could result in a significant underestimate of the age, or an overestimate of the metallicity. We suggest that future grids of solar-scaled evolutionary stellar models could be complemented by Hyades-scaled models in the mass range 0.25 to 0.85M_{sun}_.2023MNRAS.518..662Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/518/662CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)I/352 : Distances to 1.47 billion stars in Gaia EDR3J/A+A/585/A7 : Hyades single stars fiducial photometry (Kopytova+, 2016)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/MNRAS/518/662https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/518/662http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/518/662https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/518/662https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/518/662http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/518/662GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/518/662/table1 (Single and multiple candidate members of the Hyades cluster, classified according to GAIA photometry and parallax, sorted by RA)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/518/662/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/518/662/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/518/662/table1?GETtext/xml+votable180.050000true0.65313414551.9453476770.0055555555555555565/80 84 87 256 261 5851 5869 5873-5876 5880-5881 5883-5884 5886-5887 6052 6058-6059 6/60 78 95 197 211 247 260 262 265 272 274 276 278-279 281 287 303 305 309 311 313 315 318 324-326 330 333-335 340-342 344 353 355 357-358 360 365-369 373-375 378 381-383 401 405 407 426-427 450 456 458 462 465-466 470 472 478 481 483 488 490 499 507 601 663 671 701 706 712 729 749 770 780 784 803 823 835 840 847 879 882 890 906 917 968 989 997 1009 1020 1029 1031-1033 1035-1036 1038 1041-1042 1049-1050 1052 1057-1058 1060-1062 1064-1065 1072 1075 1090 1097 1162-1163 1166 1196 1199 1201 1211 1234 1272 1554 1564 1568 1577 1580 1611 1614 1640 1676 1704 1720 2052 2086 2152 2163 2178 2183 2211 2274 2291 2293 2296 2325 2328 2335 2350 2356 2375 2383 2418 2426 2446 2456-2457 2466 2468 2483 2496 2525 2535 2538 2574 2577 2583 2606 2609 2634 2678 2686 2715 2724 2736 2739 2741 2744 2788-2789 2792 2802 2804 2806 2811 2827-2828 2830 2838 2844 2866 2874 2880 2893 2915 2949 2974 2980-2981 2988 2992 2995 3117 6285 13389 13443 13512 13579 13643 13654 13667 13669 13681 13686 13745 13758-13759 13761 13770 13772 13774 13776 13778 13782 13787 13795-13796 13802 13805 13809-13810 13816 13818 13823 13950 14036 14085 14091 14093-14094 14121 14123 14130 14135 14137 14142 14144 14154 14162 14169 14178 14193 14208 14211-14212 14223 14227 14230 14232 14237 17843 17852 18404 19751 19941 19957 20326-20327 20560 20565 20574 20690 20706 20737 20748 20883 20886 20896 20898 21227 21238 21267 21289 21297 21299-21300 21307-21308 21347 21350 21352 21354-21355 21368 21370-21371 21374 21377 21388 21398 21429 21464 21468 21472 21490 21493 21496 21500 21503 22598 22679 22713 22761 22781 22811 22823 22844 22847 22856-22857 22864 22869 22872 22882 22890 22892 22902 22904 22906-22908 22910-22912 22916 22920-22921 22935-22936 22948 22956 22978 23006 23010-23011 23017 23022 23024 23026 23035 23037 23113 23115 23139 23169 23211 23261 23285-23286 23288 23313 23315 23321 23324-23325 23328-23329 23339 23344-23345 23355-23356 23358-23359 23362 23368-23370 23372 23375 23383 23385-23389 23392-23393 23395-23396 23399 23408 23413 23415-23416 23418-23419 23443-23444 23448 23450 23453-23454 23462-23463 23468 23472 23487 23489-23490 23508 23510-23511 23513-23516 23518-23519 23529-23531 23540-23542 23558 23561 23603 23611 23651 23680 23689 23695 23704 23710 23714 23721-23724 23726-23727 23737-23739 23741 23753 23784 23789 23794 24067-24068 24070 24075-24076 24078 24083 24094-24095 24097-24100 24102-24106 24109-24111 24118 24124 24126 24137 24175 24192 24194-24196 24200-24201 24203-24204 24206-24207 24212 24215-24218 24220 24223-24226 24228-24230 24241-24242 24244 24246 24248-24249 24251 24256 24259 24266 24280 24294 24297-24298 24310 24319 39642 39672 396741.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/518/662?format=asciiOpticaldefaultJ/MNRAS/518/662/table1Single and multiple candidate members of the Hyades cluster, classified according to GAIA photometry and parallax, sorted by RArecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3GAIA EDR3 source_idmeta.id;meta.maincharRA_ICRSBarycentric right ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSBarycentric declination (ICRS) at Ep=2016.0degpos.eq.dec;meta.maindpgeoMedian photogeometric distance posteriorpcpos.distancefloatb_dpgeo16th quantile photogeometric distance posteriorpcpos.distancefloatB_dpgeo84th quantile photogeometric distance posteriorpcpos.distancefloatGmagGaia G magnitudemagphot.mag;em.optfloate_GmagGaia G magnitude uncertaintymagstat.error;phot.magfloatBPmagGaia BP magnitudemagphot.mag;em.opt.Bfloate_BPmagGaia BP magnitude uncertaintymagstat.error;phot.magfloatRPmagGaia RP magnitudemagphot.mag;em.opt.Rfloate_RPmagGaia RP magnitude uncertaintymagstat.error;phot.magfloatSimbadSimbad column added by the CDSmeta.ref.urlcharFlag[1/4] Note (1)meta.code.errorint