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Title:
A new composite supernova remnant of low surface brightness - G322.5 - 0.1
Authors:
Whiteoak, J. B. Z.
Affiliation:
AA(Sydney, University, Australia)
Publication:
Royal Astronomical Society, Monthly Notices (ISSN 0035-8711), vol. 256, no. 1, May 1, 1992, p. 121-124. (MNRAS Homepage)
Publication Date:
05/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
STELLAR LUMINOSITY, SUPERNOVA REMNANTS, ASTRONOMICAL OBSERVATORIES, BRIGHTNESS DISTRIBUTION, RADIO EMISSION, SKY SURVEYS (ASTRONOMY), SOUTHERN SKY, STELLAR ENVELOPES
Bibliographic Code:
1992MNRAS.256..121W

Abstract

A composite supernova remnant, G322.5 - 0.1, has been discovered in a survey of the southern galactic plane at 843 MHz with the Molonglo Observatory Synthesis Telescope. The remnant consists of a roughly circular shell of diameter 15 arcmin, an elliptical plerionic component of extent 5 x 3 arcmin/sq at its center, and a number of bright knots that are confined to the eastern half of the remnant. The total flux density at 843 MHz is 2.0 Jy, and the mean surface brightness is 1.5 x 10 exp -21 W m/sq/Hz/Sr, giving G322.5-0.1 the lowest surface brightness of any known composite supernova remnant.

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