Información del autor
Autor Fernández Figueroa, María José |
Documentos disponibles escritos por este autor (44)
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
![Selecciones disponibles](./images/orderby_az.gif)
![]()
texto impreso
Crespo Chacón, I. ; Montes Gutiérrez, David ; García Álvarez, D. ; Fernández Figueroa, María José ; López Santiago, J. ; Foing, B. H. | EDP Sciencies | 2006-06We report the results of a high temporal resolution spectroscopic monitoring of the flare star AD Leo. During 4 nights, more than 600 spectra were taken in the optical range using the Isaac Newton Telescope (INT) and the Intermediate Dispersion [...]![]()
texto impreso
Fernández Figueroa, María José ; Montesinos, B. ; Castro Rubio, Elisa de ; Rego Fernández, Manuel ; Giménez, A. ; Reglero, V. | EDP Sciencies | 1986-11We report here new Ca II H and K emission line fluxes and equivalent widths for seven RSCVn binary systems, observed at several orbital phases. All the stars show enhanced chromospheric activity. With information from available spectra, an in d[...]![]()
texto impreso
Castro Rubio, Elisa de ; Fernández Figueroa, María José ; Rego Fernández, Manuel ; Ponz, D. | EDP Sciencies | 1981Far ultraviolet emission lines in a sample of seven stars of spectral type later than F5 and different luminosity class have been analyzed to calculate the electron density and pressure in the formation region of the lines. Three different metho[...]![]()
texto impreso
Fernández Figueroa, María José ; Rego Fernández, Manuel ; Cornide Castro-Piñeiro, Manuel | EDP Sciencies | 1980The structure of the outer stellar regions is investigated for four G type dwarfs observed with the IUE satellite. Line fluxes of the Si II lines at 1817 Å, 1808 A, and 1309 Å and Si III at 1206 Å are used to obtain temperatures and electronic [...]![]()
texto impreso
Montes Gutiérrez, David ; Castro Rubio, Elisa de ; Fernández Figueroa, María José ; Cornide Castro-Piñeiro, Manuel | EDP Sciences | 1995-12We present new spectroscopic observations in the Ca II H & K line region for a sample of 28 chromospherically active binary systems (RS CVn and BY Dra classes), with different activity levels. By using the spectral subtraction technique (subtrac[...]![]()
texto impreso
Fernández Figueroa, María José ; Montes Gutiérrez, David ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | University Chicago Press | 1994-01We report high-resolution observations of the Ca II H and K and Balmer H_? lines in 53 chromospherically active binary systems including the RS Canum Venaticorum binaries (RS CVn) and BY Draconis (BY Dra) classes. The rotational periods of the s[...]![]()
texto impreso
Fernández Figueroa, María José ; Montes Gutiérrez, David ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | University Chicago Press | 1994-01We report high-resolution observations of the Ca II H and K and Balmer H? lines in 53 chromospherically active binary systems including the RS Canum Venaticorum binaries (RS CVn) and BY Draconis (BY Dra) classes. The rotational periods of the sa[...]![]()
texto impreso
Montes Gutiérrez, David ; López Santiago, Javier ; Fernández Figueroa, María José ; Galves, M. C. | EDP Sciencies | 2001-12We present here high resolution echelle spectra taken during three observing runs of 14 single late-type stars identified in our previous studies (Montes et al. 2001b, hereafter Paper I) as possible members of different young stellar kinematic g[...]![]()
texto impreso
Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Rego Fernández, Manuel | EDP Sciencies | 1983Ultraviolet emissions of ?Cet, ?Pav, and 61 Cyg A have been analysed to determine the structure of their outer atmospheres. Emission line fluxes are used to find the emission measure distributions. Using two boundary values of the electron press[...]![]()
texto impreso
In this work we try to establish a connection between the dynamo effect, which operates in the convection zone of late-type stars, and the chromospheric activity observed in these objects. We estímate in a theoretical way, for a sample of main-s[...]![]()
texto impreso
In this work we analyse the behaviour of 22 members of the RS CVn family whose absolute parameters are known by observation. We have carried out a study in comparison with detached and normal-evolution systems in order to obtain some general pro[...]![]()
texto impreso
Reglero, V. ; Giménez, A. ; Fabregat, J. ; de Catro, E. ; Fernández Figueroa, María José ; De Castro, A. | Amer. Inst. Physics | 1988-05From 1984 to 1986 the authors made several observational campaigns at Calar Alto and La Palma Observatories using the uvby and ? photometric systems to monitor a selected sample of late-type variable stars. In this paper they present the ? value[...]![]()
texto impreso
López Santiago, Javier ; Montes Gutiérrez, David ; Gálvez Ortiz, M. C. ; Crespo Chacón, I. ; Martínez Arnáiz, R. M. ; Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | EDP Sciencies | 2010-05Aims. We present a compilation of spectroscopic data from a survey of 144 chromospherically active young stars in the solar neighborhood, which may be used to investigate different aspects of its formation and evolution in terms of kinematics an[...]![]()
texto impreso
Reglero, V. ; Giménez, A. ; Fabregat, J. ; Castro Rubio, Elisa de ; Fernández Figueroa, María José ; Castro, A. de | IOP publishing ltd | 1988-05From 1984 to 1986, we made several observational campaigns at Calar Alto and La Palma Observatories using the uvby and ß photometric systems to monitor a selected sample of late-type variable stars. In this paper we present the ß values for 38 [...]![]()
texto impreso
Montes Gutiérrez, David ; López Santiago, Javier ; Gálvez, M. C. ; Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | Wiley | 2001-11-21This is the first paper of a series aimed at studying the properties of late-type members of young stellar kinematic groups. We concentrate our study on classical young moving groups such as the Local Association (Pleiades moving group, 20-150 M[...]![]()
texto impreso
Montes Gutiérrez, David ; Latorre, A. ; Fernández Figueroa, María José | Astronomical Society of the Pacific (ASP) | 2000We have compiled a catalog of late-type stars (F5-M) members of representative, young disk, stellar kinematic groups: the Local Association (20-150 Myr), Ursa Mayor group (300 Myr), Hyades supercluster (600 Myr), IC 2391 supercluster (35 Myr), a[...]![]()
texto impreso
Montes Gutiérrez, David ; Martín, E. L. ; Fernández Figueroa, María José ; Cornide Castro-Piñeiro, Manuel ; Castro Rubio, Elisa de | EDP Sciences | 1997-06In this work we present spectroscopic observations centered in the spectral lines most widely used as optical indicators of chromospheric activity (H?, H?, CaII H & K, and HeI D_3) in a sample of F, G, K and M chromospherically inactive stars. [...]![]()
texto impreso
Fernández Figueroa, María José ; Barrado, D. ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | EDP Sciencies | 1993-07Observations of the Li i doublet at 6707.8 angstrom for a sample of active binary systems RS CVn and By Dra have been carried out at the Calar Alto Observatory with the 2.2 m telescope. In addition, some single stars with different chromospheric[...]![]()
texto impreso
Fernández Figueroa, María José ; Barrado y Navascués, D. ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | EDP Sciencies | 1993-07Observations of the Li i doublet at 6707.8 angstrom for a sample of active binary systems RS CVn and By Dra have been carried out at the Calar Alto Observatory with the 2.2 m telescope. In addition, some single stars with different chromospheric[...]![]()
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
Gálvez, M. C. ; Montes Gutiérrez, David ; Fernández Figueroa, María José ; López Santiago, Javier ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | EDP Sciencies | 2002-07We present high resolution echelle spectra taken during four observing runs from 1999 to 2001 of the recently X-ray/EUV selected chromospherically active binary BK Psc (2RE J0039+103). Our observations confirm the single-lined spectroscopic bina[...]![]()
texto impreso
Gálvez, M. C. ; Montes Gutiérrez, David ; Fernández Figueroa, María José ; Castro Rubio, Elisa de ; Cornide Castro-Piñeiro, Manuel | EDP Sciencies | 2007-09Context. This is the fifth paper in a series aimed at studying the chromospheres of active binary systems using several optical spectroscopic indicators to obtain or improve orbital solution and fundamental stellar parameters. Aims. We present h[...]