275 citations · 2.7k across the 27 of their papers we have counts for
10 papers · 1 filter
Stars and brown dwarfs in the sigma Orionis cluster. IV. IDS/INT and OSIRIS/GTC spectroscopy and Gaia DR2 astrometry
J. A. Caballero, A. de Burgos, F. J. Alonso-Floriano +3
Context. Only a few open clusters are as important for the study of stellar and substellar objects, and their formation and evolution, as the young sigma Orionis cluster. However,…
CARMENES input catalogue of M dwarfs IV. New rotation periods from photometric time series
E. Diez Alonso, J. A. Caballero, D. Montes +21
Aims. The main goal of this work is to measure rotation periods of the M-type dwarf stars being observed by the CARMENES exoplanet survey to help distinguish radial-velocity signal…
Calibrating the metallicity of M dwarfs in wide physical binaries with F-, G-, and K- primaries - I: High-resolution spectroscopy with HERMES: stellar parameters, abundances, and kinematics
D. Montes, R. González-Peinado, H. M. Tabernero +7
We investigated almost 500 stars distributed among 193 binary or multiple systems made of late-F, G-, or early-K primaries and late-K or M dwarf companion candidates. For all of th…
CARMENES input catalogue of M dwarfs: III. Rotation and activity from high-resolution spectroscopic observations
S. V. Jeffers, P. Schoefer, A. Lamert +18
CARMENES is a spectrograph for radial velocity surveys of M dwarfs with the aim of detecting Earth-mass planets orbiting in the habitable zones of their host stars. To ensure an op…
The CARMENES search for exoplanets around M dwarfs: High-resolution optical and near-infrared spectroscopy of 324 survey stars
A. Reiners, M. Zechmeister, J. A. Caballero +170
The CARMENES radial velocity (RV) survey is observing 324 M dwarfs to search for any orbiting planets. In this paper, we present the survey sample by publishing one CARMENES spectr…
CARMENES input catalogue of M dwarfs II. High-resolution imaging with FastCam
M. Cortes-Contreras, V. J. S. Bejar, J. A. Caballero +12
Aims: We search for low-mass companions of M dwarfs and characterize their multiplicity fraction with the purpose of helping in the selection of the most appropriate targets for th…
Kinematics of M dwarfs in the CARMENES input catalogue: membership in young moving groups
D. Montes, J. A. Caballero, I. Gallardo +2
We present a detailed study of the kinematics of M dwarfs in the CARMENES (Calar Alto high-Resolution search for M dwarfs with Exoearths with Near-infrared and optical Echelle Spec…
Reaching the boundary between stellar kinematic groups and very wide binaries. III. Sixteen new stars and eight new wide systems in the beta Pictoris moving group
F. J. Alonso-Floriano, J. A. Caballero, M. Cortes-Contreras +2
Aims. We look for common proper motion companions to stars of the nearby young beta Pictoris moving group. Methods. First, we compiled a list of 185 beta Pictoris members and candi…
CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS
F. J. Alonso-Floriano, J. C. Morales, J. A. Caballero +9
Context. CARMENES is a stabilised, high-resolution, double-channel spectrograph at the 3.5 m Calar Alto telescope. It is optimally designed for radial-velocity surveys of M dwarfs…
An Aladin-based search for proper-motion companions to young stars in the Local Association, Tucana-Horologium and beta Pictoris
F. J. Alonso-Floriano, J. A. Caballero, D. Montes
We have used the Aladin sky atlas of the Virtual Observatory to look for new common proper-motion pairs in three young stellar kinematic groups: Local Association (~10-120 Ma), Tuc…