The effective temperature scale of M dwarfs

Context. Despite their large number in the Galaxy, M dwarfs remain elusive objects and the modeling of their photospheres has long remained a challenge (molecular opacities, dust cloud formation). Aims. Our objectives are to validate the BT-Settl model atmospheres, update the M dwarf Teff-spectral type relation, and find the atmospheric parameters of the stars in our sample. Methods. We compare two samples of optical spectra covering the whole M dwarf sequence with the most recent BT-Settl synthetic spectra and use a � 2 minimization technique to determine Teff. The first sample consists of 97 low-resolution spectra obta ined with NTT at La Silla Observatory. The second sample contains 55 mid-resolution spectra obtained at the Siding Spring Observa tory (SSO). The spectral typing is realized by comparison with already classified M dwarfs. Results. We show that the BT-Settl synthetic spectra reproduce the slope of the spectral energy distribution and most of its featu res. Only the CaOH band at 5570A and AlH and NaH hydrides in the bluepart of the spectra are still missing in the models. The Teff-scale obtained with the higher resolved SSO 2.3 m spectra is consistent with that obtained with the NTT spectra. We compare our Teffscale with those of other authors and to published isochrones using the BT-Settl colors. We also present relations between effective temperature, spectral type and colors of the M dwarfs.

• Publication year

  2013

• Venue

  Astronomy and Astrophysics

• Publication date

  2013-04-15

• Fields of study

  Physics

• Identifiers
  DOI 10.1051/0004-6361/201321346arXiv 1304.4072
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• The very low mass multiple system LHS 1070. A testbed for model atmospheres for the lower end of the main sequence

  2012cited by this paper
• Atmospheres From Very Low-Mass Stars to Extrasolar Planets

  2012influential reference
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  2012cited by this paper
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  2012cited by this paper
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  2011cited by this paper
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  2011cited by this paper
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  2011cited by this paper
• Models of Stars, Brown Dwarfs and Exoplanets

  2011cited by this paper
• Models of very-low-mass stars, brown dwarfs and exoplanets

  2011influential reference
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  2010cited by this paper
• Spectroscopic characterization of 78 DENIS ultracool dwarf candidates in the solar neighborhood and the Upper Scorpii OB association

  2010cited by this paper
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  2010cited by this paper
• UBV(RI)C JHK observations of Hipparcos-selected nearby stars

  2010cited by this paper
• ERRATUM: “THE LUMINOSITY AND MASS FUNCTIONS OF LOW-MASS STARS IN THE GALACTIC DISK. II. THE FIELD” (2010, AJ, 139, 2679)

  2010cited by this paper
• VizieR Online Data Catalog

  2009cited by this paper
• The chemical composition of the Sun

  2009cited by this paper
• A low-resolution near-infrared spectral library of M-, L-, and T-dwarfs

  2009cited by this paper
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  2008influential reference
• MEETING THE COOL NEIGHBORS. X. ULTRACOOL DWARFS FROM THE 2MASS ALL-SKY DATA RELEASE

  2008cited by this paper
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  2007cited by this paper
• Meeting the Cool Neighbors. XI. Beyond the NLTT Catalog

  2007cited by this paper
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  2007cited by this paper
• The Two Micron All Sky Survey (2MASS)

  2006cited by this paper
• Energy transport, overshoot, and mixing in the atmospheres of M-type main- and pre-main-sequence objects

  2006cited by this paper
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  2006cited by this paper
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  2006cited by this paper
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  2006cited by this paper
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  2005cited by this paper
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  2005cited by this paper
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  2005cited by this paper
• CDSD-1000: the high-temperature carbon dioxide spectroscopic databank and information system

  2004cited by this paper
• New nearby stars in the Liverpool-Edinburgh high proper motion survey selected by DENIS photometry ,

  2004cited by this paper
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  2004cited by this paper
• The Molecular Continuum Opacity of 24MgH in Cool Stellar Atmospheres

  2003cited by this paper
• Statistical properties of exoplanets.

  2003cited by this paper
• Galactic Stellar and Substellar Initial Mass Function

  2003influential reference
• Line Intensities and Molecular Opacities of the FeH F 4Δi-X 4Δi Transition

  2003cited by this paper
• New Theoretical Line List for the B′ 2Σ+←X 2Σ+ System of 24MgH

  2003cited by this paper
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  2003cited by this paper
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  2003influential reference
• Numerical simulations of surface convection in a late M-dwarf

  2002cited by this paper
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  2002influential reference
• New periodic variables from the Hipparcos epoch photometry

  2001cited by this paper
• The Limiting Effects of Dust in Brown Dwarf Model Atmospheres

  2001cited by this paper
• High-temperature (1000–7000 K) collision-induced absorption of H2 pairs computed from the first principles, with application to cool and dense stellar atmospheres

  2001cited by this paper
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  2000cited by this paper
• Evolutionary Models for Very Low-Mass Stars and Brown Dwarfs with Dusty Atmospheres

  2000cited by this paper
• Young Low-Mass Stars and Brown Dwarfs in IC 348

  1999cited by this paper
• Searching for very low-mass stars and brown dwarfs with DENIS

  1999cited by this paper
• The NextGen Model Atmosphere Grid for 3000 ≤ Teff ≤ 10,000 K

  1998cited by this paper
• High-resolution spectra of very low-mass stars

  1998cited by this paper
• Infrared Colors at the Stellar/Substellar Boundary

  1998cited by this paper
• K-Band Spectra and Narrowband Photometry of DENIS Field Brown Dwarfs

  1998cited by this paper
• The Deep Near Infrared Southern Sky Survey (denis): Progress Status and Scientific Achievements

  1997cited by this paper
• MODEL ATMOSPHERES OF VERY LOW MASS STARS AND BROWN DWARFS

  1997influential reference
• Low-mass Binaries in the Hyades - A scarcity of brown dwarfs

  1997cited by this paper
• The Impact of Large Scale Near-IR Sky Surveys

  1997cited by this paper
• M-subdwarfs: spectroscopic classification and the metallicity scale

  1996influential reference
• Infrared Spectra of Low-Mass Stars: Toward a Temperature Scale for Red Dwarfs

  1996influential reference
• Parallel Implementation of the PHOENIX Generalized Stellar Atmosphere Program

  1996cited by this paper
• Spectroscopy Made Easy: A New Tool for Fitting Observations with Synthetic Spectra

  1996influential reference
• Theoretical calculations of pressure broadening coefficients for H2O perturbed by Hydrogen or helium gas

  1996influential reference
• The Temperature Scale for Cool Dwarfs

  1995cited by this paper
• Model atmospheres for M (sub)dwarf stars. 1: The base model grid

  1995cited by this paper
• The influence of H2O line blanketing on the spectra of cool dwarf stars

  1994cited by this paper
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  1994cited by this paper
• Calculation of (12)C(16)O and (13)C(16)O X(1)Sigma(+) rovibrational intensities for v less than or equal to 20 and J less than or equal to 150

  1994cited by this paper
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  1993cited by this paper
• The faintest stars: infrared photometry, spectra, and bolometric magnitudes

  1993cited by this paper
• Effective temperatures of M dwarfs

  1992influential reference
• The Late M Dwarfs

  1991cited by this paper
• Observations of M dwarfs beyond 2.2 microns

  1987cited by this paper
• New light on faint stars – V. Infrared photometry and the H–R diagram for very low mass dwarfs

  1984cited by this paper
• The infrared flux method for determining stellar angular diameters and effective temperatures

  1979cited by this paper
• Atmospheric extinction in the four-micron region.

  1979cited by this paper
• Cloud microphysics: Analysis of the clouds of Earth, Venus, Mars and Jupiter

  1978cited by this paper
• Stellar angular diameters from infrared photometry. Application to Arcturus and other stars; with effective temperatures.

  1977cited by this paper
• Luminosities and temperatures of M dwarf stars from infrared photometry.

  1974cited by this paper
• Physik der Sternatmosphären : mit besonder Berücksichtigung der Sonne

  1968influential reference

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• Revising Properties of Planet–Host Binary Systems. IV. The Radius Distribution of Small Planets in Binary Star Systems Is Dependent on Stellar Separation

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  2022influential citation
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