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The Host Galaxies of Radio-Loud AGN

from Part 5 - Bulge Phenomenology

Published online by Cambridge University Press:  10 November 2010

By
C.M. Urry ,
R. Scarpa ,
M. O'Dowd ,
M. Giavalisco ,
R. Falomo ,
J.E. Pesce  and
A. Treves
Edited by
C. Marcella Carollo ,
Henry C. Ferguson  and
Rosemary F. G. Wyse
C.M. Urry
Affiliation:
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA
R. Scarpa
Affiliation:
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA
M. O'Dowd
Affiliation:
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA
M. Giavalisco
Affiliation:
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA
R. Falomo
Affiliation:
Osservatorio Astronomico di Padova, Vicolo Dell'osservatorio 5, 35122 Padova, Italy
J.E. Pesce
Affiliation:
Eureka Scientific, 657 Cricklewood Dr., State College PA 16803, USA
A. Treves
Affiliation:
University of Insubria, via Lucini 3, 22100 Como, Italy
C. Marcella Carollo
Affiliation:
Columbia University, New York
Henry C. Ferguson
Affiliation:
Space Telescope Science Institute, Baltimore
Rosemary F. G. Wyse
Affiliation:
The Johns Hopkins University
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Summary

AGN are known to lie in galaxies, and both galaxies and AGN evolve similarly over cosmic time (e.g., Silk & Rees 1998). This suggests a close connection between the nuclear phenomena associated with black holes and the formation and evolution of ordinary galaxies. The host galaxies of AGN are a direct probe of the AGN-galaxy connection. Among AGN, BL Lac objects are know to reside mostly, if not systematically, in elliptical galaxies. BL Lac can therefore probe (massive) spheroids to large redshifts. Results from an HST WFPC2 survey of ∼ 100 BL Lac objects are here presented.

Introduction: The Range of Radio-Loud AGN

While AGN are clearly unified through orientation (Antonucci 1993; Urry & Padovani 1995), important intrinsic differences remain. For example, extended radio lobes form only when the radio power exceeds a threshold that increases with galaxy luminosity (Ledlow & Owen 1996, Bicknell 1995). Powerful FRII radio galaxies (defined by their lobe morphologies; Fanaroff & Riley 1974) correspond to the most luminous quasars, while lower luminosity FRI radio galaxies correspond to BL Lac objects (Urry & Padovani 1995).

At any given redshift z, the full range of luminosity needs to be explored in host galaxy studies, to separate trends in host galaxy properties with nuclear AGN luminosity from a possible redshift dependence.

Type
Chapter
Information
The Formation of Galactic Bulges , pp. 183 - 186
Publisher: Cambridge University Press
Print publication year: 2000

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  • The Host Galaxies of Radio-Loud AGN
    • By C.M. Urry, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, R. Scarpa, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, M. O'Dowd, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, M. Giavalisco, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, R. Falomo, Osservatorio Astronomico di Padova, Vicolo Dell'osservatorio 5, 35122 Padova, Italy, J.E. Pesce, Eureka Scientific, 657 Cricklewood Dr., State College PA 16803, USA, A. Treves, University of Insubria, via Lucini 3, 22100 Como, Italy
  • Edited by C. Marcella Carollo, Columbia University, New York, Henry C. Ferguson, Space Telescope Science Institute, Baltimore, Rosemary F. G. Wyse, The Johns Hopkins University
  • Book: The Formation of Galactic Bulges
  • Online publication: 10 November 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511564611.031
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  • The Host Galaxies of Radio-Loud AGN
    • By C.M. Urry, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, R. Scarpa, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, M. O'Dowd, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, M. Giavalisco, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, R. Falomo, Osservatorio Astronomico di Padova, Vicolo Dell'osservatorio 5, 35122 Padova, Italy, J.E. Pesce, Eureka Scientific, 657 Cricklewood Dr., State College PA 16803, USA, A. Treves, University of Insubria, via Lucini 3, 22100 Como, Italy
  • Edited by C. Marcella Carollo, Columbia University, New York, Henry C. Ferguson, Space Telescope Science Institute, Baltimore, Rosemary F. G. Wyse, The Johns Hopkins University
  • Book: The Formation of Galactic Bulges
  • Online publication: 10 November 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511564611.031
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • The Host Galaxies of Radio-Loud AGN
    • By C.M. Urry, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, R. Scarpa, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, M. O'Dowd, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, M. Giavalisco, Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, USA, R. Falomo, Osservatorio Astronomico di Padova, Vicolo Dell'osservatorio 5, 35122 Padova, Italy, J.E. Pesce, Eureka Scientific, 657 Cricklewood Dr., State College PA 16803, USA, A. Treves, University of Insubria, via Lucini 3, 22100 Como, Italy
  • Edited by C. Marcella Carollo, Columbia University, New York, Henry C. Ferguson, Space Telescope Science Institute, Baltimore, Rosemary F. G. Wyse, The Johns Hopkins University
  • Book: The Formation of Galactic Bulges
  • Online publication: 10 November 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511564611.031
Available formats
×