J/AJ/159/193ivo://CDS.VizieR/J/AJ/159/193doi:10.26093/cds/vizier.51590193CDSGalgano B.Stassun K.Rojas-Ayala B.2020-10-02T10:46:29Z2020-06-09T07:07:51ZCDS support team

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

cds-question@unistra.frdwarf-starsm-starsstellar-radiistellar-massesstellar-spectral-typesvisible-astronomyspectroscopyeffective-temperatureM-dwarfs are the most common type of star in the Galaxy, and because of their small size are favored targets for searches of Earth-sized transiting exoplanets. Current and upcoming all-sky spectroscopic surveys, such as the Large Sky Area Multi Fiber Spectroscopic Telescope (LAMOST), offer an opportunity to systematically determine physical properties of many more M dwarfs than has been previously possible. Here, we present new effective temperatures, radii, masses, and luminosities for 29678 M dwarfs with spectral types M0-M6 in the first data release (DR1) of LAMOST. We derived these parameters from the supervised machine-learning code, The Cannon, trained with 1388 M-dwarfs in the Transiting Exoplanet Survey Satellite Cool Dwarf Catalog that were also present in LAMOST with high signal-to-noise ratio (>250) spectra. Our validation tests show that the output parameter uncertainties are strongly correlated with the signal-to-noise of the LAMOST spectra, and we achieve typical uncertainties of 110K in T_eff_(~3%), 0.065R_{sun}_(~14%) in radius, 0.054M_{sun}_(~12%) in mass, and 0.012L_{sun}_(~20%) in luminosity. The model presented here can be rapidly applied to future LAMOST data releases, significantly extending the samples of well-characterized M dwarfs across the sky using new and exclusively data-based modeling methods.2020AJ....159..193Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/159/193CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/146 : LAMOST DR1 catalogs (Luo+, 2015)V/164 : LAMOST DR5 catalogs (Luo+, 2019)VI/156 : M-dwarf Lum-Temp-Radius relationships (Morrell+, 2019)J/AJ/130/1871 : Spectroscopic survey of M dwarfs (Bochanski+, 2005)J/MNRAS/389/585 : Fundamental parameters of M dwarfs (Casagrande+, 2008)J/ApJ/748/93 : K-band spectra of 133 nearby M dwarfs (Rojas-Ayala+,2012)J/AJ/145/102 : Spectroscopy of M dwarfs in northern sky (Lepine+, 2013)J/other/RAA/15.1182 : M Dwarf catalog of LAMOST DR1 (Guo+, 2015)J/A+A/577/A132 : Stellar parameters of early M dwarfs (Maldonado+, 2015)J/AJ/150/42 : Catalog of 2612 M dwarfs from LAMOST (Zhong+, 2015)J/ApJ/804/64 : Empirical & model parameters of 183 M dwarfs (Mann+,2015)J/ApJ/808/16 : The Cannon: approach to determine abundances (Ness+,2015)J/ApJ/823/114 : The Cannon: approach to determine masses (Ness+, 2016)J/ApJ/836/5 : Abundances of LAMOST giants from APOGEE DR12 (Ho+, 2017)J/ApJ/851/26 : Teff, Fe/H & Ti abundance of M dwarfs (Veyette+, 2017)J/AJ/155/180 : A catalog of cool dwarf targets for TESS (Muirhead+,2018)J/AJ/156/217 : Properties M dwarfs in MEarth-South (Newton+, 2018)J/ApJ/871/63 : How to constrain your M dwarf II (Mann+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/159/193https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/159/193http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/159/193https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/159/193https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/159/193http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/159/193GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/159/193/table1 (Resulting stellar parameter values from applying the Cannon M dwarf model to LAMOST spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/159/193/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/159/193/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/159/193/table1?GETtext/xml+votable180.050000true0.002666713.07233330.0055555555555555563/13 17 98 382 4/31 49 51 57 65 72 73 74 80 134 140 161 163 169 270 280 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26569 26580 26582 26588 26590 26597 26607 26610 26611 26612 26614 26615 26617 26618 26619 26875 26883 26884 26888 26913 26941 26955 26958 26960 26962 26964 26965 26968 26971 26974 26975 26979 26987 26992 26995 27005 27007 27029 27034 27038 27045 27053 27055 27075 27076 27077 27084 27089 27091 27094 27095 27097 27098 27099 27110 27111 27116 27118 27121 27123 27124 27125 27126 27129 27130 27131 27132 27133 27140 27142 27145 27147 27148 27150 27160 27162 27167 27172 27174 27175 27183 27184 27189 27190 27191 27194 27195 27203 27205 27206 27207 27218 27219 27224 27226 27227 27230 27263 27265 27267 27268 27270 27271 27273 27276 27277 27278 27280 27281 27282 27294 27321 27323 27332 27333 27335 27336 27337 27340 27341 27343 27345 27347 27351 27352 27358 27359 27370 27377 27382 27383 27384 27385 27388 27407 27409 27412 27418 27425 27427 27433 27435 27437 27438 27439 27442 27448 27449 27450 27452 27454 27455 27457 27460 27463 27467 27470 27471 27476 27489 27496 27500 27502 27503 27509 27510 27512 27513 27514 27516 27525 27536 27537 27539 27562 27584 27585 27586 27590 27596 27613 27615 27645 27648 27649 27667 27668 27671 27676 27682 27683 27688 27690 27693 27697 27698 27699 27704 27706 27712 27715 27724 27727 27745 27746 27747 27755 27762 27763 27768 27769 27770 27778 27787 27792 27793 27825 27827 27829 27830 27831 27832 27834 27835 27841 27843 27844 27845 27847 27856 27858 27860 27862 27868 27878 27880 27881 27882 27884 27888 27889 27894 27895 27897 27901 27932 27933 27935 27956 27959 27964 27965 27967 27970 27971 27973 27974 27975 27976 27982 27983 28001 28002 28005 28008 28016 28020 28021 28027 28047 28050 28051 28054 28060 28062 28069 28089 28091 28098 28100 28102 28103 28105 28115 28118 28121 28122 28123 28128 28130 28131 28132 28133 28135 28144 28145 28147 28156 28157 28158 28171 28200 28201 28203 28208 28210 28211 28213 28216 28217 28218 28224 28226 28230 28256 28257 28292 28293 28304 28305 28320 28321 28323 28324 28326 28329 28332 28333 28334 28382 28383 28390 28391 28393 28395 28401 28402 28403 28404 28405 28407 28422 28423 28425 28427 28432 28433 28434 28452 28454 28455 28461 28463 28500 28501 28502 28516 28518 28519 28536 28537 28538 28554 28555 28564 28565 28566 28572 28596 28598 28600 28601 28602 28620 28624 28625 28628 28629 28636 28644 28645 28647 28657 28658 28659 28660 28663 30908 30910 30975 31101 31147 31252 31254 31285 31286 31287 31289 31293 31295 31308 31317 31318 31324 31328 31330 31331 31340 31357 31358 31369 31370 31371 31380 31381 31384 31386 31398 31400 31401 31402 31404 31405 31408 31410 31430 31431 31436 31437 31441 31444 31445 31448 31456 31457 31459 31461 31462 31463 31469 31472 31492 31495 31498 31500 31501 31502 31513 31515 31516 31518 31529 31531 31543 31545 31550 31611 31612 31614 31615 31616 31617 31619 31620 31624 31625 31626 31697 31707 31709 31711 31717 31719 31732 31733 31734 31736 31737 31739 31778 31780 31785 31786 31789 31791 31802 31877 31878 31888 31889 32271 32293 32294 32295 32300 32304 32306 32316 32383 32389 32390 32393 32394 32401 32403 32409 32415 32418 32424 32437 32469 32470 32471 32475 32476 32478 32479 32485 32487 32492 32493 32495 32501 32504 32506 32507 32508 32510 32546 32550 32551 32553 32555 32570 32640 32641 32642 32646 32648 32656 32667 32689 32690 32691 32697 32699 32713 32714 32721 32722 32723 32726 32735 32736 32738 32739 32741 32742 32743 32744 32756 32758 32760 36818 36824 36826 36836 36843 36845 36846 36847 36849 36850 36851 36852 36854 40881 40891 40928 40930 40931 40937 40938 40939 40942 44982 45019 45033 45034 45038 45039 45041 45044 45045 45047 45050 45051 48999 49011 49016 49017 49018 49022 49023 49093 49095 49104 49106 49107 49116 49117 49119 49141https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/159/193?format=asciiOpticaldefaultJ/AJ/159/193/table1Resulting stellar parameter values from applying the Cannon M dwarf model to LAMOST spectraSpTLAMOST spectral subtypesrc.spTypecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLAMOSTLAMOST DR1 Designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharTeff[2900/4114] Cannon derived effective temperatureKphys.temperature.effectivedoublee_Teff[89/3699] Formal (1{sigma}) error in Teff (1)Kstat.error;phys.temperature.effectivedoubleRstar[0.13/0.67] Cannon derived stellar radiussolRadphys.size.radiusfloate_Rstar[0.04/1.9] Formal (1{sigma}) error in Rstar (1)solRadstat.errorfloatMstar[0.1/0.71] Cannon derived stellar masssolMassphys.massfloate_Mstar[0.05/2.3] Formal (1{sigma}) error in Mstar (1)solMassstat.errorfloatLstar[0.002/0.12] Cannon derived stellar luminositysolLumphys.luminosityfloate_Lstar[0.01/0.31] Formal (1{sigma}) error in Lstar (1)solLumstat.errorfloatSNRl[50/1362] Summed signal-to-noise quality metric (SNR_{lambda}_) (2)stat.snrdoublechi2[369/4998] Reduced {chi}^2^ of the fitstat.fit.param;meta.modelleddoubleMCatDisplay data from the M dwarf LAMOST DR1 catalog (Guo+, 2015, J/other/RAA/15.1182)meta.ref.urlchar_RAPosition from LAMOST DR1 names (right ascension part)degpos.eq.ra;meta.mainindexed_DEPosition from LAMOST DR1 names (declination part)degpos.eq.dec;meta.mainindexed