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Cifuentes, C. ; Caballero, J.A. ; Cortés Contreras, Miriam ; Montes Gutiérrez, David ; Abellán, F.J. ; Dorda, R. ; Holgado, G. ; Zapatero Osorio, M.R. ; Morales, J.C. ; Amado, P.J. ; Passegger, V.M. ; Quirrenbach, A. ; Reiners, A. ; Ribas, I. ; Schweitzer, A. ; Sanz Forcada, J. ; Seifert, W. ; Solano, E. | EDP Sciencies | 2020-10-12Context. The relevance of M dwarfs in the search for potentially habitable Earth-sized planets has grown significantly in the last years. Aims. In our on-going effort to comprehensively and accurately characterise confirmed and potential planet-[...]texto impreso
Caballero, J.A. ; Sanz Forcada, J. ; Cortés Contreras, Miriam ; Montes Gutiérrez, David | EDP Science | 2018-12-07We present three transit observations of HD 189733 b obtained with the high-resolution spectrograph CARMENES at Calar Alto. A strong absorption signal is detected in the near-infrared He I triplet at 10830 Å in all three transits. During mid-tra[...]texto impreso
Sanz Forcada, J. ; Caballero, J. A. ; Labarga Ávalos, F. ; Montes Gutiérrez, David | EDP Sciencies | 2019-09Context. Recently, the He I triplet at 10 830 Å was rediscovered as an excellent probe of the extended and possibly evaporating atmospheres of close-in transiting planets. This has already resulted in detections of this triplet in the atmosphere[...]texto impreso
Montes Gutiérrez, David ; Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Sanz Forcada, J. | EDP Sciences | 1997-10This is the first paper of a series aimed at studying the chromosphere of active binary systems using the information provided for several optical spectroscopic features. Simultaneous H_?, Na I D_1, D_2, and He I D_3 spectroscopic observations a[...]texto impreso
Montes Gutiérrez, David ; Sanz Forcada, J. ; Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Poncet, A. | EDP Sciencies | 1998-02-01The star EZ Peg, long ago classified as cataclysmic variable, has been shown to be a chromospherically active binary system of the RS CVn-type. In this paper we have analysed, using the spectral subtraction technique, simultaneous spectroscopic [...]texto impreso
Montes Gutiérrez, David ; Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel ; Latorre, A. ; Sanz Forcada, J. | EDP Sciences | 2000-10This is the third paper of a series aimed at studying the chromosphere of active binary systems using the information provided for several optical spectroscopic features. High resolution echelle spectra including all the optical chromospheric ac[...]texto impreso
Montes Gutiérrez, David ; Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel ; Latorre, A. ; Sanz Forcada, J. | EDP Sciences | 2000-10This is the third paper of a series aimed at studying the chromosphere of active binary systems using the information provided for several optical spectroscopic features. High resolution echelle spectra including all the optical chromospheric ac[...]texto impreso
Sanz Forcada, J. ; Montes Gutiérrez, David ; Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | Astronomical Society of the Pacific | 1999We present here a continuation of our ongoing project of multiwavelength optical observations aimed at studying the chromosphere of active binary systems using the information provided for several optical spectroscopic features that are formed a[...]texto impreso
Sanz Forcada, J. ; Caballero, J. A. ; Cortés Contreras, Miriam ; Montes Gutiérrez, David | EDP Sciencies | 2019-11-25The He I infrared (IR) triplet at 10 830 Å is an important activity indicator for the Sun and in solar-type stars, however, it has rarely been studied in relation to M dwarfs to date. In this study, we use the time-averaged spectra of 319 single[...]
