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)
· arXiv e-print (arXiv:astro-ph/9512159)
· On-line Data
· References in the article
· Citations to the Article (60) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (39)
· NED Objects (39)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The Variability of Quasars. II. Frequency Dependence
Authors:
di Clemente, A.; Giallongo, E.; Natali, G.; Trevese, D.; Vagnetti, F.
Publication:
Astrophysical Journal v.463, p.466 (ApJ Homepage)
Publication Date:
06/1996
Origin:
APJ; NED
Astronomy Keywords:
GALAXIES: QUASARS: GENERAL, GALAXIES: PHOTOMETRY
DOI:
10.1086/177261
Bibliographic Code:
1996ApJ...463..466D

Abstract

The variability of 30 PG quasars has been observed in the red band during 3 years. A rest-frame structure function analysis shows an increase of variability with the time interval up to 0.2 mag rms after 2 years. A comparison with the IUE data available for PG quasars shows that the variability increases with the rest-frame frequency at each time interval. Evidence for this effect is supported by the analysis of the average variability of other published quasar samples. The effect can account completely for the increase of variability with redshift found in other studies.

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