The Effective temperature scale of M dwarfs from spectral synthesis

Abstract : We present a comparison of low-resolution spectra of 60 stars covering the whole M-dwarf sequence. Using the most recent PHOENIX BT-Settl stellar model atmospheres (see paper by F. Allard, in this book) we do a first quantitative compari- son to our observed spectra in the wavelength range 550-950 nm. We perform a first confrontation between models and observations and we assign an effective tempera- tures to the observed M-dwarfs. Teff-spectral type relations are then compared with the published ones. This comparison also aims at improving the models' opacities.
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Contributor : France Allard <>
Submitted on : Thursday, December 20, 2012 - 8:10:49 PM
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  • HAL Id : ensl-00768147, version 1
  • ARXIV : 1102.1263

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C. Reyle, A. S. Rajpurohit, M. Schultheis, F. Allard. The Effective temperature scale of M dwarfs from spectral synthesis. 2011. ⟨ensl-00768147⟩

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