{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,13]],"date-time":"2025-11-13T07:16:39Z","timestamp":1763018199929,"version":"3.37.3"},"reference-count":18,"publisher":"American Astronomical Society","issue":"5","license":[{"start":{"date-parts":[[2020,4,9]],"date-time":"2020-04-09T00:00:00Z","timestamp":1586390400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/page\/copyright"},{"start":{"date-parts":[[2020,4,9]],"date-time":"2020-04-09T00:00:00Z","timestamp":1586390400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"funder":[{"name":"NSF","award":["AST-1358862"],"award-info":[{"award-number":["AST-1358862"]}]}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["AJ"],"published-print":{"date-parts":[[2020,5,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>M\u00a0dwarfs 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\u00a0Fiber Spectroscopic Telescope (LAMOST), offer an opportunity to systematically determine physical properties of many more M\u00a0dwarfs than has been previously possible. Here, we present new effective temperatures, radii, masses, and luminosities for 29,678 M\u00a0dwarfs with spectral types M0\u2013M6 in the first data release (DR1) of LAMOST. We derived these parameters from the supervised machine-learning code, The Cannon, trained with 1388 M\u00a0dwarfs in the Transiting Exoplanet Survey Satellite Cool Dwarf Catalog that were also present in LAMOST with high signal-to-noise ratio (&gt;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 110 K in <jats:inline-formula>\n                     <jats:tex-math>\n\n<\/jats:tex-math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"ajab7f37ieqn1.gif\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula> (\u223c3%), 0.065\u00a0<jats:inline-formula>\n                     <jats:tex-math>\n\n<\/jats:tex-math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"ajab7f37ieqn2.gif\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula> (\u223c14%) in radius, 0.054\u00a0<jats:inline-formula>\n                     <jats:tex-math>\n\n<\/jats:tex-math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"ajab7f37ieqn3.gif\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula> (\u223c12%) in mass, and 0.012\u00a0<jats:inline-formula>\n                     <jats:tex-math>\n\n<\/jats:tex-math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"ajab7f37ieqn4.gif\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula> (\u223c20%) in luminosity. The model presented here can be rapidly applied to future LAMOST data releases, significantly extending the samples of well-characterized M\u00a0dwarfs across the sky using new and exclusively data-based modeling methods.<\/jats:p>","DOI":"10.3847\/1538-3881\/ab7f37","type":"journal-article","created":{"date-parts":[[2020,4,9]],"date-time":"2020-04-09T13:13:21Z","timestamp":1586438001000},"page":"193","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":10,"title":["Fundamental Parameters of \u223c30,000 M dwarfs in LAMOST DR1 Using Data-driven Spectral 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Parameters of \u223c30,000 M dwarfs in LAMOST DR1 Using Data-driven Spectral Modeling","name":"article_title","label":"Article Title"},{"value":"The Astronomical Journal","name":"journal_title","label":"Journal Title"},{"value":"paper","name":"article_type","label":"Article Type"},{"value":"\u00a9 2020. The American Astronomical Society. All rights reserved.","name":"copyright_information","label":"Copyright Information"},{"value":"2019-09-12","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2019-12-11","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2020-04-09","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}