J/A+A/620/A180ivo://CDS.VizieR/J/A+A/620/A180doi:10.26093/cds/vizier.36200180CDSRajpurohit A.S.Allard F.Rajpurohit S.Sharma R.Teixeira G.D.C.,Mousis O.Kamlesh R.2019-01-08T13:53:40Z2018-12-14T08:56:05ZCDS support team

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

cds-question@unistra.frm-starsmetallicityeffective-temperatureinfrared-photometryBeing the most numerous and oldest stars in the galaxy, M dwarfs are objects of great interest for exoplanet searches. The presence of molecules in their atmosphere complicates our understanding of their atmospheric properties. But great advances have recently been made in the modeling of M dwarfs due to the revision of solar abundances. We aim to determine stellar parameters of M dwarfs using high resolution spectra (R~90000) simultaneously in the visible and the near-infrared. The high resolution spectra and broad wavelength coverage provide an unique opportunity to understand the onset of dust and cloud formation at cool temperatures. Furthermore, this study will help in understanding the physical processes which occur in a cool atmospheres, particularly, the redistribution of energy from the optical to the near-infrared. The stellar parameters of M dwarfs in our sample have been determined by comparing the high resolution spectra both in the optical and in the near-infrared simultaneously observed by CARMENES with the synthetic spectra obtained from the BT-Settl model atmosphere. The detailed spectral synthesis of these observed spectra both in the optical and in the near-infrared helps to understand the missing continuum opacity. For the first time, we derive fundamental stellar parameters of M dwarfs using the high resolution optical and near-infrared spectra simultaneously. We determine Teff, logg and [M/H] for 292 M dwarfs of spectral type M0 to M9, where the formation of dust and clouds are important. The derived Teff for the sample ranges from 2300 to 4000K, values of log g ranges from 4.5<=logg<=5.5 and the resulting metallicity ranges from -0.5<=[M/H]<=+0.5. We have also explored the possible differences in Teff, logg and [M/H] by comparing them with other studies of the same sample of M dwarfs.2018A&A...620A.180Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/620/A180CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/577/A128 : CARMENES input catalog of M dwarfs I (Alonso-Floriano+, 2015)J/A+A/597/A47 : CARMENES input catalog of M dwarfs II (Cortes-Contreras+ 2017)J/A+A/609/A117 : CARMENES radial velocity curves of 7 M-dwarf (Trifonov+, 2018)J/A+A/609/L5 : CARMENES radial velocity curves of HD147379 b (Reiners+, 2018)J/A+A/612/A49 : 324 CARMENES M dwarfs velocities (Reiners+, 2018)J/A+A/614/A122 : Radial-velocity of CARMENES M dwarfs (Tal-Or+, 2018)J/A+A/615/A6 : Photospheric parameters of CARMENES stars (Passegger+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/620/A180https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/620/A180http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/620/A180https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/620/A180https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/620/A180http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/620/A180GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/620/A180/table2 (M dwarfs parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/620/A180/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/620/A180/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/620/A180/table2?GETtext/xml+votable180.050000true1.295371745.78656670.0055555555555555566/22 131 250 497 546 624 725 811 1033 1357 1628 1672 1822 1875 1938 2515 2545 2681 2737 2747 2922 3031 3266 3374 3658 3682 3715 3791 4033 4145 4366 4518 4595 4867 5009 5041 5207 5241 5343 5420 5488 5534 5590 5849 6384 6552 6672 6676 6894 6980 7003 7103 7181 7262 7395 7428 7471 7510 7611 7775 7837 7937 7940 7980 8023 8032 8123 8163 8208 8240 8281 8331 8394 8562 8627 8733 8843 8915 9188 9471 9529 9578 9597 10037 10149 10225 10278 10448 10464-10465 10694 10901 11044 11177 11255 11403 11671 12184 12191 12621 12732 13085 13567 13688 13743 13875 13912 14277 14395 14515 14709 14781 14850 14858 14985 14993-14994 15052 15078 15346 15355 15431 15548 15598 15602 15635 15763 15792 15960 16041 16754 16758 17020 17271 17302 17319 17348 17358 17412 17870 17898 18195 18440 18496 18553 18666 18726 18761 18789 18942 19050 19064 19131 19306 19352 19466 19516 19879 20023 20100 20311 20459 20795 20839 20896 21151 21171 21427 21747-21748 21953 21969 22014 22222 22277 22626 22645 22807 22904 23363 23453 23718 23731 23735 23743 23910 23997 24213 24227 24239 24977 24995 25009 25363 25388 25512 25528 25849 25989 26487 26538 26560 26563 26583 26699 26706 26731 26757 26772 26821 26972 27201 27289 27392 27419 27459 27462 27730 27734 27762 27787 27820 27912 28223 28341 28343 28548 28646 28955 29146 29170 29458 29684 30429 30455 30490 30505 30613 30771 30833 30893 31014 31191 31229 31642 31686 31767 31781 31803 31811 32033 32076 32093 32115 32335 32392 32458 32491 32541 32753 36732 40250 40359 40386 40436 40505 40623 40941 44518 44696 44728 44921 44936-44937 44967 48485 48500 48801 48906 48958 491011.1166583743361574e-19 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/620/A180?format=asciiInfrareddefaultJ/A+A/620/A180/table2M dwarfs parametersNameNamemeta.id;meta.maincharSpTypeSpectral typesrc.spTypecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVmag? V magnitudemagphot.mag;em.opt.VfloatnullableJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitudemagphot.mag;em.IR.KfloatnullableTeffEffective temperature, this studyKphys.temperature.effectiveintloggSurface gravity, this studylog(cm.s**-2)phys.gravityfloat[M/H]Metallicity [M/H], this studyphys.abund.Zfloatchi2chi^2^, this studystat.fit.chi2floatTeffP? Effective temperature, Passegger et al. (2018, Cat. J/A+A/615/A6)Kphys.temperatureintnullableloggP? Surface gravity, Passegger et al. (2018, Cat. J/A+A/615/A6)log(cm.s**-2)phys.gravityfloatnullable[M/H]P? Metallicity [M/H], Passegger et al. (2018, Cat. J/A+A/615/A6)phys.abund.ZfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main