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Spitzer Space Telescope Infrared Array Camera imaging provides an opportunity to study all known morphological types of galaxies in the mid-IR at a depth significantly better than ground-based near-infrared and optical images. The goal of this s[...]texto impreso
Barrio Uña, Juan Abel ; Contreras González, José Luis ; Fidalgo, David Friedrich Carreto ; Fonseca González, Mª Victoria ; Hoang, Kim Dinh ; López Moya, Marcos ; Morcuende, D. ; Peñil del Campo, Pablo ; Saha, Lab ; otros, ... | University Chicago Press | 2020-03Extreme high-frequency-peaked BL Lac objects (EHBLs) are blazars that exhibit extremely energetic synchrotron emission. They also feature nonthermal gamma-ray emission whose peak lies in the very high-energy (VHE, E > 100 GeV) range, and in som[...]texto impreso
Old stellar populations .4. Empirical fitting functions for features in the Spectra of G and K stars
Gorgas García, Francisco Javier ; Faber, S. M. ; Burstein, David ; González, J. Jesús ; Courteau, Stéphane ; Prosser, Charles | University Chicago Press | 1993-05Empirical fitting functions are presented that model the behavior of 11 strong atomic and molecular features in the spectra of Galactic G and K stars. The functions express the strength of spectral features as a function of V - K, surface gravit[...]texto impreso
The Herschel very wide field surveys have charted hundreds of square degrees in multiple far-IR (FIR) bands. While the Sloan Digital Sky Survey (SDSS) is currently the best resource for optical counterpart identifications over such wide areas, i[...]texto impreso
Emission-line galaxies are important targets for understanding the chemical evolution of galaxies in the universe. Deep, narrow-band imaging surveys allow to detect and study the flux and the equivalent widths (EW) of the emission line studied. [...]texto impreso
We present B, R, and H? images for a total of 114 nearby galaxies (v_heliotexto impreso
We present the results from an analysis of surface photometry of B, R, and H? images of a total of 114 nearby galaxies (v_heliotexto impreso
Faleiro, E. ; Gómez Gómez, José María ; Muñoz, L. ; Relaño Pérez, Armando ; Retamosa Granado, Joaquín | University Chicago Press | 2004-11We apply a principal components analysis (PCA) to the secondary particle density distributions at ground level produced by cosmic gamma-rays and protons. For this purpose, high-energy interactions of cosmic rays with Earth's atmosphere and the r[...]texto impreso
For a sample of 43 nearby, late-type galaxies, we have investigated the radial variation of both the current star formation rate and the dust-induced UV light attenuation. To do this we have cross-correlated IRAS images and GALEX observations fo[...]texto impreso
Bisigello, L. ; Caputi, K. I. ; Colina, L. ; Le Fèvre, O. ; Norgaard-Nielsen, H. U. ; Pérez González, Pablo Guillermo ; Van der Werf, P. ; Ilbert, O. ; Grogin, N. ; Koekemoer, A. | University Chicago Press | 2017-07Imaging with the James Webb Space Telescope (JWST) will allow observations of the bulk of distant galaxies at the epoch of reionization. The recovery of their properties, such as age, color excess E(B-V), specific star formation rate (sSFR), and[...]texto impreso
We have initiated a search for extended ultraviolet disk (XUV-disk) galaxies in the local universe. Here we compare GALEX UV and visible-NIR images of 189 nearby (Dtexto impreso
This work presents the main ultraviolet (UV) and far-infrared (FIR) properties of two samples of nearby galaxies selected from the GALEX (? = 2315 Å, hereafter NUV) and IRAS (? = 60 ?m) surveys, respectively. They are built in order to obtain de[...]texto impreso
We use the Galaxy Evolution Explorer (GALEX) Medium and All-Sky Imaging Survey (MIS and AIS) data from the first public data release (GR1), matched to the Sloan Digital Sky Survey (SDSS) DR3 catalog, to perform source classification. The GALEX s[...]texto impreso
Toloba, E. ; Guhathakurta, P. ; Peletier, R. F. ; Boselli, A. ; Lisker, T. ; Falcón Barroso, J. ; Simon, J. D. ; van de Ven, G. ; Paudel, S. ; Emsellem, E. ; Janz, J. ; den Brok, M. ; Gorgas García, Francisco Javier ; Hensler, G. ; Laurikainen, E. ; Niemi, S. M. ; Rys, A. ; Salo, H. | University Chicago Press | 2014-12We present spatially resolved kinematics and global stellar populations and mass-to-light ratios for a sample of 39 dwarf early-type (dE) galaxies in the Virgo cluster studied as part of the SMAKCED stellar absorption-line spectroscopy and imagi[...]texto impreso
Zamorano Calvo, Jaime ; Gallego Maestro, Jesús ; Rego Fernández, Manuel ; Vitores, A. G. ; Alonso, O. | University Chicago Press | 1996-08A low-dispersion objective-prism survey for low-redshift emission-line galaxies (ELGs) is being carried out by the Universidad Complutense de Madrid with the Schmidt telescope at the German-Spanish Observatory of Calar Alto (Almeria, Spain). A 4[...]