Abstract
view Abstract Citations (6) References (43) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Evolutionary Unified Scheme. I. Quasars and Radio Galaxies in the Viewing Angle--Redshift Plane Vagnetti, F. ; Spera, R. Abstract We present a study of the distribution of quasars and radio galaxies in the viewing-angle-redshift plane in the framework of the evolutionary unified scheme (Vagnetti, Giallongo, & Cavaliere 1991). Results are presented for some illustrative cases, including a distribution of the Lorentz factors and appropriate luminosity functions for quasars and their host galaxies. A cosmologically increasing <{GAMMA}> is found, in agreement with the previous paper. It is argued that the appearance of sources as quasars or radio galaxies can depend on the viewing angle and on the redshift, due to the balance between the beamed component and the luminosity of the host galaxy. Within the assumptions of our evolutionary unified scheme, we find that low-{GAMMA} objects can be observed as quasars mainly at z ~> 0.3, while a substantial fraction of the low-z radio galaxies could consist of quasar remnants. Publication: The Astrophysical Journal Pub Date: December 1994 DOI: 10.1086/174936 arXiv: arXiv:astro-ph/9405054 Bibcode: 1994ApJ...436..611V Keywords: Bl Lacertae Objects; Galactic Evolution; Quasars; Radio Galaxies; Luminosity; Red Shift; Astrophysics; GALAXIES: BL LACERTAE OBJECTS: GENERAL; GALAXIES: EVOLUTION; GALAXIES: QUASARS: GENERAL; RADIO CONTINUUM: GALAXIES; Astrophysics E-Print: to appear in ApJ full text sources arXiv | ADS |
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
