Browsing by Subject "galaxies : active"

Now showing items 1-3 of 3

    • The Calan-Yale Deep Extragalactic Research (CYDER) survey: Optical properties and deep spectroscopy of ... 
      Treister, Ezequiel; Castander, Francisco J.; Maccarone, Thomas J.; Gawiser, Eric; Coppi, Paolo S.; Urry, C. Megan; Maza Sancho, José; Herrera, David; González, Valentino; Montoya, Carlos; Pineda Bravo, Pedro (IOP PUBLISHING, 2005-03-01)
      We present the first results from the Calan-Yale Deep Extragalactic Research (CYDER) survey. The main goal of this survey is to study serendipitous X-ray sources detected by Chandra in an intermediate flux range (10(-15) ...
    • Constraining torus models for AGNs using X-ray observations 
      Ibar, E.; Lira Teillery, Paulina (2007)
      Context. In Unification Models, Active Galactic Nuclei (AGN) are believed to be surrounded by an axisymmetric structure of dust and gas, which greatly influences their observed properties according to the direction from ...
    • An X-ray-selected active galactic nucleus at z=4.6 discovered by the CYDER survey 
      Treister, Ezequiel; Castander, Francisco J.; Maccarone, Thomas J.; Herrera, David; Gawiser, Eric; Maza Sancho, José; Coppi, Paolo S. (UNIV CHICAGO PRESS, 2004-03-01)
      We present the discovery of a high-redshift, X-ray-selected active galactic nucleus (AGN) by the Calan-Yale Deep Extragalactic Research ( CYDER) survey: CXOCY J033716.7-050153, located at z=4.61, the second high-redshift ...