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CARMENES input catalogue of M dwarfs

V. Luminosities, colours, and spectral energy distributions
Authors: Cifuentes, C.; Caballero, J.A.; Cortés Contreras, Miriam; Montes Gutiérrez, David; Abellán, F.J.; Dorda, R.; Holgado, G.; +11 Authors

CARMENES input catalogue of M dwarfs

Abstract

This work was partly financed by the Spanish Ministry of Science and Innovation through grants AYA2016-79425-C3-1/2/3-P and BES-2017-080769, and by NASA through grant NNX17AG24G. C.C., F.J.A.P., R.D., and G.H. compiled data for this work during their MSc theses at the Universidad Complutense de Madrid. This publication made use of VOSA and the Filter Profile Service, developed and maintained by the Spanish Virtual Observatory through grant AYA2017-84089, the SIMBAD database, the Aladin sky atlas, and the VizieR catalogue access tool developed at CDS, Strasbourg Observatory, France, and the Python libraries Matplotlib, NumPy, SciPy and collection of software packages AstroPy.

[Results]: We have homogeneously computed accurate bolometric luminosities and effective temperatures of 1843 single stars, derived their radii and masses, studied the impact of metallicity, and compared our results with the literature. The over 40 000 individually inspected magnitudes, together with the basic data and derived parameters of the stars, individual and averaged by spectral type, have been made public to the astronomical community. In addition, we have reported 40 new close multiple systems and candidates (ρ < 3.3 arcsec) and 36 overluminous stars that are assigned to young Galactic populations.

[Aims]: In our on-going effort to comprehensively and accurately characterise confirmed and potential planet-hosting M dwarfs, in particular for the CARMENES survey, we have carried out a comprehensive multi-band photometric analysis involving spectral energy distributions, luminosities, absolute magnitudes, colours, and spectral types, from which we have derived basic astrophysical parameters.

[Methods]: We have carefully compiled photometry in 20 passbands from the ultraviolet to the mid-infrared, and combined it with the latest parallactic distances and close-multiplicity information, mostly from Gaia DR2, of a sample of 2479 K5 V to L8 stars and ultracool dwarfs, including 2210 nearby, bright M dwarfs. For this, we made extensive use of Virtual Observatory tools.

[Conclusions]: In the new era of exoplanet searches around M dwarfs via transit (e.g. TESS, PLATO) and radial velocity (e.g. CARMENES, NIRPS+HARPS), this work is of fundamental importance for stellar and therefore planetary parameter determination.

[Context]: The relevance of M dwarfs in the search for potentially habitable Earth-sized planets has grown significantly in the last years.

Peer reviewed

Country
Spain
Subjects by Vocabulary

Microsoft Academic Graph classification: Metallicity Astrophysics Stellar classification Photometry (optics) Planet Physics Planetary system Exoplanet Radial velocity Stars

Keywords

Astrofísica, Nearby M dwarfs, Solar neighborhood, Chromospheric activity, FOS: Physical sciences, Stars: late-type, Astronomical databases: miscellaneous, Astronomía (Física), low-mass [Stars], T-dwarfs, Stars: low-mass, Solar and Stellar Astrophysics (astro-ph.SR), Brown dwarfs, Virtual observatory tools, 52, Spectroscopic survey, Low-Mass stars, Astronomy and Astrophysics, Catalogues, Astronomía, Planetary systems, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, late-type [Stars], miscellaneous [Astronomical databases], Proper motions, Catalogs, 0.9 M program, Infrared photometry

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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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impulse
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