Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (188) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (8)
· NED Objects (4)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Compact Symmetric Objects and the Evolution of Powerful Extragalactic Radio Sources
Authors:
Readhead, A. C. S.; Taylor, G. B.; Pearson, T. J.; Wilkinson, P. N.
Publication:
Astrophysical Journal v.460, p.634 (ApJ Homepage)
Publication Date:
04/1996
Origin:
APJ; NED
Astronomy Keywords:
GALAXIES: ACTIVE, GALAXIES: JETS, GALAXIES: COMPACT, RADIO CONTINUUM: GALAXIES
DOI:
10.1086/176997
Bibliographic Code:
1996ApJ...460..634R

Abstract

Multifrequency radio observations of the compact symmetric objects 0108 + 388, 0710 + 439 and 2352 + 495, and high-resolution VLA observations of the primary hot spot in Cygnus A, are used to investigate the dependence on external density of the size, pressure, advance speed, and flux density of the hot spots in powerful extragalactic radio sources. The relationships derived are applied over the whole range of scales observed in these objects. These relationships lead directly to a unifying evolutionary model for powerful radio sources, in which compact symmetric objects evolve first into compact steep spectrum doubles, and then into large Fanaroff-Riley type II objects. We propose that this is the primary evolutionary track for powerful extragalactic radio sources. The observations strongly suggest that these objects evolve substantially in luminosity, with little variation in expansion speed between 10 pc and 200 kpc.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints