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 (42) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (20)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
330 MHz VLA observations of 20 galactic supernova remnants
Authors:
Kassim, Namir E.
Affiliation:
AA(U.S. Navy, Naval Research Laboratory, Washington, DC)
Publication:
Astronomical Journal (ISSN 0004-6256), vol. 103, March 1992, p. 943-952. (AJ Homepage)
Publication Date:
03/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
MILKY WAY GALAXY, RADIO SOURCES (ASTRONOMY), SUPERNOVA REMNANTS, VERY LARGE ARRAY (VLA), ANGULAR RESOLUTION, ASTRONOMICAL CATALOGS, EMISSION SPECTRA, STELLAR LUMINOSITY
DOI:
10.1086/116116
Bibliographic Code:
1992AJ....103..943K

Abstract

Three hundred thirty MHz images and integrated flux densities for 20 previously identified 1st quadrant Galactic SNRs are presented. The observations were made in the D configuration of the VLA giving an angular resolution of about 3 arcmin and providing good sensitivity to extended structure. Such emission, particularly if it is nonthermal, might be missed on higher frequency surveys due to confusion with the Galactic background and confusion with thermal sources in complex regions. Both problems are reduced by interferometric observations at this lower frequency. The flux densities presented can be used to anchor the low frequency end of the radio spectra of these sources, which are often poorly determined by previous observations at both high and low frequencies. The measurements presented here are also useful for distinguishing steeper spectrum shell-type emission from flatter spectrum plerionic emission for SNRs whose intrinsic morphological type is not well established.

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)
   

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