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VLA Observations of Candidate Supernova Remnants from the Clark Lake 30.9 MHz Galactic Plane Survey

Gorham, P. W. and Kulkarni, S. R. and Prince, Thomas A. (1993) VLA Observations of Candidate Supernova Remnants from the Clark Lake 30.9 MHz Galactic Plane Survey. Astronomical Journal, 105 (1). pp. 314-319. ISSN 0004-6256. doi:10.1086/116428.

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We report the results of 1464 MHz continuum VLA observations of eight fields containing unidentified small-diameter objects associated with candidate supernova remnants from the Clark Lake 30.9 MHz galactic plane survey. The observations were made in the C configuration, giving a resolution of -12-20 arcsec, and a sensitivity of typically <0.5 mJy per beam. Polarization measurements were made as well. One of the 30.9 MHz candidates, G41.4+ 1.2, appears to be confirmed as a supernova remnant by our observations. Of the remaining seven fields observed, three were found to contain small-diameter objects which met some of the criteria for nonthermal origin, but will require further study to evaluate whether they are associated with the candidate supernova remnants. Two of the fields were found to contain groups of unresolved objects consistent with expectations for extragalactic background sources. In these cases the 30.9 MHz observations, which could not resolve the individual sources but would view them as a single extended source, may have mistakenly identified them as possible supernova remnants. Finally, two fields contained bright H II regions

Item Type:Article
Related URLs:
URLURL TypeDescription
Kulkarni, S. R.0000-0001-5390-8563
Prince, Thomas A.0000-0002-8850-3627
Additional Information:© American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 27 May 1992; revised 18 August 1992.
Group:Space Radiation Laboratory
Non-Subject Keywords:Extragalactic Radio Sources, H Ii Regions, Sky Surveys (Astronomy), Supernova Remnants, Very Large Array (Vla), Galactic Structure, Linear Polarization, Massive Stars, Stellar Evolution
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1993-01
Issue or Number:1
Record Number:CaltechAUTHORS:20140516-101945773
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45795
Deposited By: Deborah Miles
Deposited On:20 May 2014 18:07
Last Modified:10 Nov 2021 17:16

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