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Povi?, M. ; Sánchez Portal, M. ; Pérez García, A. M. ; Bongiovanni, A. ; Cepa, J. ; Huertas Company, M. ; Lara López, M. A. ; Fernández Lorenzo, M. ; Ederoclite, A. ; Alfaro, E. ; Castañeda, H. ; Gallego Maestro, Jesús ; González Serrano, J. I. ; González, J. J. | EDP Sciencies | 2012-05Context. The connection between active galactic nuclei (AGN) and their host galaxies has been widely studied and found to be of great importance for providing answers to some fundamental questions related to AGN fuelling mechanisms, and both the[...]texto impreso
Sánchez Blázquez, Patricia ; Gorgas García, Francisco Javier ; Cardiel López, Nicolás ; Cenarro, J. ; González, J. J. | IOP Publishing | 2003-06-20Central line-strength indices were measured in the blue spectral region for a sample of 98 early-type galaxies in different environments. For most indices (Mg b and [Fe] in particular), elliptical galaxies in rich clusters and in low-density reg[...]texto impreso
Gorgas García, Francisco Javier ; Cardiel López, Nicolás ; Pedraz, S. ; González, J. J. | EDP Sciences | 1999-10Empirical fitting functions, describing the behaviour of the ?4000 Å break, D_4000, in terms of effective temperature, metallicity and surface gravity, are presented. For this purpose, the break has been measured in 392 stars from the Lick/IDS L[...]texto impreso
Gorgas García, Francisco Javier ; Pedraz, Santos ; Guzmán, Rafael ; Cardiel López, Nicolás ; González, J. J. | IOP Publishing | 1997-05-20We present new measurements of central line-strength indices (namely, Mg-2, (Fe), and H beta) and gradients for a sample of six bright spheroidal (Sph) galaxies in the Virgo Cluster. Comparison with similar measurements for elliptical (E) galaxi[...]texto impreso
Cepa, J. ; Pérez García, A. M. ; Bongiovanni, A. ; Alfaro, E. J. ; Castañeda, H. ; Gallego Maestro, Jesús ; González Serrano, J. I. ; Sánchez Portal, M. ; González, J. J. | EDP Sciencies | 2008-10Context. The Groth field is one of the sky regions that will be targeted by the OTELO (OSIRIS Tunable Filter Emission Line Object) survey in the optical 820 nm and 920 nm atmospheric windows. A complementary broad-band photometric catalogue of t[...]texto impreso
Povi?, M. ; Sánchez Portal, M. ; Pérez García, A. M. ; Bongiovanni, A. ; Cepa, J. ; Alfaro, E. ; Castañeda, H. ; Fernández Lorenzo, M. ; Gallego Maestro, Jesús ; González Serrano, J. I. ; González, J. J. ; Lara López, M. A. | American Astronomical Society | 2009-11-20The Groth field is one of the sky regions that will be targeted by the OSIRIS Tunable Filter Emission Line Object survey in the optical 820 nm and 920 nm atmospheric windows. In the present paper, public Chandra X-ray data with total exposure ti[...]texto impreso
Cardiel López, Nicolás ; Gorgas García, Francisco Javier ; Cenarro, J. ; González, J. J. | EDP Sciences | 1998-02We present a new set of accurate formulae for the computation of random errors in the measurement of atomic and molecular line-strength indices. The new expressions are in excellent agreement with numerical simulations. We have found that, in so[...]texto impreso
Sánchez Blázquez, P. ; Gorgas García, Francisco Javier ; Cardiel López, Nicolás ; González, J. J. | EDP Sciencies | 2006-10This paper commences a series devoted to the study of the stellar content of early-type galaxies. The goal of the series is to set constraints on the evolutionary status of these objects. Methods. In this paper we describe the details of the gal[...]texto impreso
Sánchez Blázquez, P. ; Gorgas García, Francisco Javier ; Cardiel López, Nicolás ; González, J. J. | EDP Sciencies | 2006-10This is the second paper of a series devoted to the study of the stellar content of early-type galaxies. The goal of the series is to set constraints on the evolutionary status of these objects Methods. We use a new set of models that include an[...]
