Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 2K055

CARMENES AT PPVI. 3. LOW-RESOLUTION SPECTROSCOPY OF M DWARFS WITH CAFOS AT CALAR ALTO

Mundt, R. (Max-Planck-Institut für Astronomie, Germany)
Alonso-Floriano, F. J. (Universidad Complutense de Madrid, Spain)
Caballero, J. A. (Centro de Astrobiología, Spain)
Klutsch, A. (Universidad Complutense de Madrid, Spain)
Montes, D. (Universidad Complutense de Madrid, Spain)
Morales, J. C. (Institut de Cičncies de l\'Espai, Spain)
Cortés-Contreras, M. (Universidad Complutense de Madrid, Spain)
Ribas, I. (Institut de Cičncies de l\'Espai, Spain)
Reiners, A. (Institut für Astrophysik Göttingen, Germany)
Quirrenbach, A. (Landessternwarte Königstuhl, Germany)
Amado, P. J. (Instituto de Astrofísica de Andalucía, Spain)

Abstract:
We conduct long observational campaigns with CAFOS at the 2.2. m Calar Alto telescope to obtain low-resolution (R~1500) spectra of poorly-known M dwarfs and candidates that are bright enough to be considered as potential CARMENES targets. We perform a spectral-type classification of the targets by comparing their acquired spectra with those of spectral-type standard stars observed during the same observing runs, and using spectral indices well calibrated for M dwarfs, such as TiO-n, CaH-n, VO-n and PC-n. We also measure chromospheric activity indicators. Up to now, over 400 M dwarfs have been observed and analysed, many of which had not been spectroscopically investigated yet.

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