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Montes Gutiérrez, David ; González Peinado, R. ; Tabernero, H. M. ; Caballero, J. A. ; Gómez Marfil, Emilio ; Alonso Floriano, F. J. ; Cortés Contreras, Miriam ; González Hernández, J. I. ; Klutsch, A. ; Moreno Jodar, C. | Oxford Univ Press | 2018-09We investigated almost 500 stars distributed among 193 binary or multiple systems made of late-E, G-, or earl y-K-primaries and late-K- or M-dwarf companion candidates, For all of them, we compiled or measured coordinates, J-band magnitudes, spe[...]texto impreso
Cifuentes, C. ; Cortés Contreras, M. ; González Peinado, R. ; Gómez Marfil, E. ; Montes Gutiérrez, David ; Abellán, F.A. ; Alonso Floriano, F.J. ; Cano Marchante, J. ; Carro, J. ; Díez Alonso, E. ; Dorda, R. ; Gallardo, D. ; González Álvarez, E. ; Hidalgo, D. ; Holgado, G. ; Klutsch, A. ; Labarga Ávalos, F. ; Lázaro, F.J. ; Llamas, M. ; López Santiago, J. ; Martínez Rodríguez, H. ; Sánchez Blanco, E. ; Tabernero Guzmán, H.M. | Spie-Int Soc Optical Engineering | 2018The CARMENES instrument has been operational at the 3.5 m telescope of Calar Alto Observatory since January 2016. It consists of two cross-dispersed ´echelle spectrographs covering the wavelength range from 0.52 to 1.71 µm. CARMENES is currently[...]texto impreso
Alonso Floriano, F. J. ; Morales, J. C. ; Caballero, J. A. ; Montes Gutiérrez, David ; Klutsch, A. ; Mundt, R. ; Cortés Contreras, Miriam ; Ribas, I. ; Reiners, A. ; Amado, P. J. ; Quirrenbach, A. ; Jeffers, S. V. | EDP Sciencies | 2015-05Context. CARMENES is a stabilised, high-resolution, double-channel spectrograph at the 3.5m Calar Alto telescope. It is optimally designed for radial-velocity surveys of M dwarfs with potentially habitable Earth-mass planets. Aims. We prepare a [...]texto impreso
Frasca, A. ; Montes Gutiérrez, David ; Alcalá, J.M. ; Klutsch, A. ; Guillout, P. | Copernicus Foundation Polish Astronomy | 2018The study of contemporaneous variations of the continuum flux and emission lines is of great importance to understand the different astrophysical processes at work in T Tauri stars. In this paper we present the results of a simultaneous BV RI an[...]texto impreso
Guillout, P. ; Frasca, A. ; Klutsch, A. ; Marilli, E. ; Montes Gutiérrez, David | EDP Sciencies | 2010-09Context. During the course of a large spectroscopic survey of X-ray active late-type stars in the solar neighbourhood, we discovered four lithium-rich stars packed within just a few degrees on the sky. Although located in a sky area rich in CO m[...]texto impreso
Klutsch, A. ; Frasca, A. ; Gillout, P. ; Montes Gutiérrez, David ; Pineau, F.-X. ; Grosso, N. ; Stelzer, B. | EDP Sciencies | 2020-05-13Context. Young field stars are hardly distinguishable from older ones because their space motion rapidly mixes them with the stellar population of the Galactic plane. Nevertheless, a careful target selection allows for young stars to be spotted [...]texto impreso
Fröhlich, H. E. ; Frasca, A. ; Catanzaro, G. ; Bonanno, A. ; Corsaro, E. ; Molenda-?akowicz, J. ; Klutsch, A. ; Montes Gutiérrez, David | EDP Sciencies | 2012-07Aims. We present a detailed study of the two Sun-like stars KIC?7985370 and KIC?7765135, to determine their activity level, spot distribution, and differential rotation. Both stars were previously discovered by us to be young stars and were obse[...]texto impreso
Montes Gutiérrez, David ; López Santiago, J. ; Martínez Arnáiz, R. M. ; Guillout, P. ; Klutsch, A. ; Freire Ferrero, R. ; Frasca, A. ; Marilli, E. | American Institute of Physics | 2009Post T Tauri stars (PTTS) are late-type stars in the age range between 10 and 100 Myr filling the gap between T Tauri (TTs) and zero-age: main sequence phases. This period of evolution remains ambiguous and until now different studies of young s[...]texto impreso
Frasca, A. ; Guillout, P. ; Klutsch, A. ; Freire Ferrero, R. ; Marilli, E. ; Biazzo, K. ; Gandolfi, D. ; Montes Gutiérrez, David | EDP Sciences | 2018-05-04Context. Star formation in the solar neighborhood is mainly traced by young stars in open clusters, associations, and in the field, which can be identified, for example, by their X-ray emission. The determination of stellar parameters for the op[...]texto impreso
Caballero, J. A. ; Montes Gutiérrez, David ; Klutsch, A. ; Genebriera, J. ; Miret, F. X. ; Tobal, T. ; Cairol, J. ; Pedraz, S. | EDP Sciencies | 2010-09Aims. We investigated in detail the system WDS 19312+3607, whose primary is an active M4.5Ve star previously inferred to be young (? ~ 300–500?Ma) based on its high X-ray luminosity. Methods. We collected intermediate- and low-resolution optical[...]
