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.
@article{arxiv.1102.1263,
title = {The Effective temperature scale of M dwarfs from spectral synthesis},
author = {C. Reyle and A. S. Rajpurohit and M. Schultheis and F. Allard},
journal= {arXiv preprint arXiv:1102.1263},
year = {2011}
}
Comments
To be published in the on-line version of the Proceedings of Cool Stars 16 (ASP Conference Series) New version with bibliography corrected