Calibrating the metallicity of M dwarfs in wide physical binaries with F-, G-, and K- primaries: spectral indices and photometry of the M dwarfs secondaries
Abstract
In our previous work (Montes et al. 2018) we have established a sample of 192 physically bound systems made of late-F, G-, or early-K primaries and late-K or M dwarf companion. For 173 primaries of these systems we have derived precise stellar atmospheric parameters: Teff, log g, Vmicro, and chemical abundances for 13 atomic species, including [Fe/H]. Using this information of the primaries and the spectral indices derived from CAFOS/2.2m (CAHA) low-resolution spectra and photometry in different bands of the M-dwarf companions we have derived several calibrations.
- Publication:
-
20th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun
- Pub Date:
- July 2018
- DOI:
- 10.5281/zenodo.1473032
- Bibcode:
- 2018csss.confE..47M
- Keywords:
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- proper motions;
- stars: abundances;
- binaries: visual;
- stars: fundamental parameters;
- stars: late-type;
- stars: solar-type;
- Zenodo community cs20