J/A+A/649/A147ivo://CDS.VizieR/J/A+A/649/A147doi:10.26093/cds/vizier.36490147CDSSarmento P.Rojas-Ayala B.Delgado Mena E.Blanco-Cuaresma S.2023-05-05T11:15:30Z2021-05-28T09:03:15ZCDS support team

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

cds-question@unistra.frm-starseffective-temperaturechemical-abundancesspectroscopyThe scientific community's interest on the stellar parameters of M dwarfs has been increasing over the last few years, with potential applications ranging from galactic characterization to exoplanet detection. The main motivation for this work is to develop an alternative and objective method to derive stellar parameters for M dwarfs using the H-band spectra provided by the Apache Point Observatory Galactic Evolution Experiment (APOGEE). Synthetic spectra generated with iSpec, Turbospectrum, MARCS models atmospheres and a custom made line list including over 1000000 water lines, are compared to APOGEE observations, and parameters are determined through {chi}^2^ minimization. Spectroscopic parameters (Teff, [M/H], logg, v_mic_) are presented for a sample of 313 M dwarfs, obtained from their APOGEE H-band spectra. The generated synthetic spectra reproduce observed spectra to a high accuracy level. The impact of the spectra normalization on the results are analyzed as well. Our output parameters are compared with the ones obtained with APOGEE Stellar Parameter and Chemical Abundances Pipeline (ASPCAP) for the same stellar spectrum, and we find that the values agree within the expected uncertainties. Comparisons with other previous near-infrared and optical literature are also available, with median differences within our estimated uncertainties found in most cases. Possible reasons for these differences are explored. The full H-band line list, the line selection for the synthesis, and the synthesized spectra are available for download, as are the calculated stellar parameters.2021A&A...649A.147Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/649/A147CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/649/A147https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/649/A147http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/649/A147https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/649/A147https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/649/A147http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/649/A147GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/649/A147/tablec1 (All derived parameters for stellar sample from APOGEE DR16)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/649/A147/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/649/A147/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/649/A147/tablec1?GETtext/xml+votable180.050000true0.1958761116.402811110.0055555555555555566/90 131 526 548 551 1264-1265 1357 1359 1380 1418 1433 1450 1506 1537 1547 1761 1773 1775 1788 1792-1793 1805-1806 1822-1824 1828 1843-1845 1875 1953 1979-1981 2545 2737 2805 2953 2972 2974 2980 2992 3043 3045 3057 3148 3227 3229-3230 3269 3280 3313 3316 3466 3751 3762 3860 3862 4033 4073 4111 4122 4144 4932 5181 5228 5331 5337 5420 5534 5562 5893 5916-5918 6367 6541 6547 6552 6690 7264 7785 8088 8116 8372 8381 8443 8446 8843 8867 8894 8939-8940 8942 9157-9158 9431 9437-9438 9685-9686 9905 10008 10149 10305 10332 10359 10364 10580 10672 10749 10851 10860 10894 10914-10915 11098 11185 11188 11190-11191 11210 11264 11636 11740 11743 12940 12994 13046 13053 13161 13311 13800 13920 14013 14043 14065 14311 14328 14361 14385-14386 14392 14419 14428 14430 14447 14456-14457 14533 14579 14591 14714 14716 14752 14755 14772 14794 14830 14921 14935 14942 14966 14972 14975 15146 15311 15388 15417 15420 15446 15449 15533 15694 15696 15704 15788 15839 15861 16110 18430 19696 19699 19775 19975 19980 20100 21655 21675 21697 21699 22040 22098 22131 22136 22172 22199 22217 22221-22222 22229 22239 22250 22309 22807 23213 23218 23581 23630 23636 23640-23641 23768 23794 23798 23801 23847 23853 23858 23861 23915 23953 24159 24283 24305 24343 24373 24375 24395 24416 24457-24458 24463 24491 24513 26015 26036 26085 26097 26188 26192 26583 26919 26972 26986-26987 27007 27092 27095 27863 27895 27911 28074 28241 28324 28327 28416 28462 29565 29894 30187 30331 30340 30392 30428 30451 30457 30505 30528 30710 30715-30716 31147 31583 31603-31606 31751 31756 32084 32461 32702 40679https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/649/A147?format=asciidefaultJ/A+A/649/A147/tablec1All derived parameters for stellar sample from APOGEE DR16recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameAPOGEE_ID_1 name, 2MHHMMSSss+DDMMSSsmeta.id;meta.maincharTeffIInput Normalization effective temperature (T_I)Kphys.temperature.effective;arith.ratiointloggIInput Normalization log(g) (log g_I)log(cm.s**-2)phys.gravityfloat[M/H]IInput Normalization Metallicity (MH_I)phys.abund.FefloatTeffOOutput effective temperature (T_O)Kphys.temperature.effectivefloatloggOOutput surface gravity (log g_O)log(cm.s**-2)phys.gravitydouble[M/H]OOutput metallicity (MH_O)phys.abund.FefloatvmicOOutput microturbulence (vmic_O)km/sphys.veloc.microTurbdoublevmacOOutput macroturbulence (vmac_O)km/sphys.velocfloatvsiniOOutput rotational velocity (vsini_O)km/sphys.veloc.rotatdoublelimbOOutput limb darkening (limb_O)phot.limbDarkfloatROOutput resolution (R_O)time.resolutionfloatrwchisqOutput reduced chiSquare (rwchisq)stat.fit.chi2doubleRAJ2000Right Ascension (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (DEC)degpos.eq.dec;meta.mainTeffspASPCAP DR16 effective temperature (TEFF_SPEC)Kphys.temperature.effectivefloatloggspASPCAP DR16 surface gravity (LOGG_SPEC)log(cm.s**-2)phys.gravityfloatSimbadSimbad column added by the CDSmeta.ref.urlchar