The CARMENES Survey: A Search for Terrestrial Planets in the Habitable Zones of M Dwarfs

Quirrenbach, A.; Amado, P. J.; Caballero, J. A.; Mandel, H.; Mundt, R.; Reiners, A.; Ribas, I.; Carrasco, M. A. Sánchez; Seifert, W.; Azzaro, M.; Galadí, D.
Formation, Detection, and Characterization of Extrasolar Habitable Planets, Proceedings of the International Astronomical Union, IAU Symposium, Volume 293, pp. 177-182 (2014).


CARMENES (Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical Echelle Spectrographs) is a next-generation instrument under construction for the 3.5 m telescope at the Calar Alto Observatory by a consortium of eleven Spanish and German institutions. The scientific goal of the project is a five-year exoplanet survey targeting 300 M stars with the completed instrument. The CARMENES hardware consists of two separate échelle spectrographs covering the wavelength range from 0.55 to 1.7 μm at a spectral resolution of R = 82,000, fed by fibers from the Cassegrain focus of the telescope. Both spectrographs are housed in a temperature-stabilized environment in vacuum tanks, to enable a long-term radial velocity precision of 1 m s-1 employing a simultaneous calibration with Th-Ne and U-Ne emission line lamps.