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Tabernero Guzmán, Hugo Martín ; Marfil, E. ; Montes Gutiérrez, David ; González Hernández, J.I. | EDP SCIENCES S A | 2019-08-20Context. StePar is an automatic code written in Python 3.X designed to compute the stellar atmospheric parameters T_(eff), log g, [Fe/H], and ? of FGK-type stars by means of the equivalent width (EW) method. This code has already been extensivel[...]texto impreso
Schweitzer, A. ; Passegger, V.M: ; Cifuentes, C. ; Béjar, V.J.S. ; Cortés Contreras, Miriam ; Caballero, J. A. ; Burgo, C. del ; Czesla, S. ; Kürster, M. ; Montes, D. ; Zapatero Osorio, M.R. ; Ribas, I. ; Reiners, A. ; Quirrenbach, A. ; Amado, P.J. ; Aceituno, J. ; Anglada Escudé, G. ; Bauer, F.F. ; Dreizler, S. ; Jeffers, S.V. ; Guenther, E.W. ; Henning, T. ; Kaminski, A. ; Lafarga, M. ; Marfil, E. ; Morales, J.C. ; Schmitt, J.H.M.M. ; Seifert, W. ; Solano, E. ; Tabernero, H.M. ; Zechmeister, M. | EDP SCIENCES S A | 2019-05Aims. We determine the radii and masses of 293 nearby, bright M dwarfs of the CARMENES survey. This is the first time that such a large and homogeneous high-resolution (R > 80, 000) spectroscopic survey has been used to derive these fundamental[...]texto impreso
Despite their activity, low-mass stars are of particular importance for the search of exoplanets by the means of Doppler spectroscopy, as planets with lower masses become detectable. We report on the discovery of a planetary companion around HD [...]texto impreso
Despite their activity, low-mass stars are of particular importance for the search of exoplanets by the means of Doppler spectroscopy, as planets with lower masses become detectable. We report on the discovery of a planetary companion around HD [...]texto impreso
Context. The CARMENES spectrograph is surveying similar to 300 M dwarf stars in search for exoplanets. Among the target stars, spectroscopic binary systems have been discovered, which can be used to measure fundamental properties of stars. Aims.[...]texto impreso
Context. The new CARMENES instrument comprises two high-resolution and high-stability spectrographs that are used to search for habitable planets around M dwarfs in the visible and near-infrared regime via the Doppler technique. Aims. Characteri[...]texto impreso
Context. Previous simulations predicted the activity-induced radial-velocity (RV) variations of M dwarfs to range from similar to 1 cm s(-1) to similar to 1 km s(-1), depending on various stellar and activity parameters. Aims. We investigate the[...]texto impreso
Context. Teegarden’s Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0 V), the star shows relatively little activity and is a prime target for near-infrared radial velocit[...]texto impreso
Pelló, R. ; Hudelot, P. ; Laporte, N. ; Mellier, Y. ; McCraken, H.J. ; Balcells, M. ; Boone, F. ; Cardiel López, Nicolás ; Gallego Maestro, Jesús ; Garzón, F. ; Guzmán, R.G. ; Le Borgne, J.F. ; Prieto, M. ; Richard, J. ; Schaerer, D. ; Tresse, L. ; Arnouts, S. ; Cuby, J.G. ; Disseau, K. ; Hayes, M. | EDP SCIENCES S A | 2018-11-29The aim of this paper is to introduce the WIRCam Ultra Deep Survey (WUDS), a near-IR photometric survey carried out at the CFH Telescope in the field of the CFHTLS-D3 field (Groth Strip). WUDS includes four near-IR bands (Y, J, H and Ks) over a [...]texto impreso
The analysis and combination of data from different gamma-ray instruments involves the use of collaboration proprietary software and case-by-case methods. The effort of defining a common data format for high-level data, namely event lists and in[...]texto impreso
Methods. The water vapor absorption lines from the atmosphere of the planet are Doppler-shifted due to the large change in its radial velocity during transit. This shift is of the order of tens of km s^(?1) , whilst the Earth’s telluric and the [...]