A radio/infrared/optical study of candidate supernova remnants from the Clark Lake 30.9 MHz Galactic plane survey

Abstract

view Abstract Citations (12) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Radio/Infrared/Optical Study of Candidate Supernova Remnants from the Clark Lake 30.9 MHz Galactic Plane Survey Gorham, Peter W. Abstract In this paper, it is shown that more than half of the SNR candidates from the first Galactic quadrant in the Clark Lake 30.9 MHz survey show independent evidence of being associated with SNRs. In most cases, these appear to be low surface brightness SNRs which have escaped detection in the past. About a fifth of the candidates should be strongly considered for classification as new SNRs, and a third of these are also probable IR sources, consistent with the detected fraction of known Galactic SNRs seen in a recent IR survey. Two of the confirmed candidates share the characteristic of appearing considerably larger at 30.9 MHz than they do at centimeter or optical wavelengths. This characteristic suggests the possibility of extended, low surface brightness emission that may extend considerably beyond the nominal boundaries of some SNRs. Publication: The Astrophysical Journal Pub Date: November 1990 DOI: 10.1086/169401 Bibcode: 1990ApJ...364..187G Keywords: Infrared Astronomy; Radio Astronomy; Sky Surveys (Astronomy); Supernova Remnants; Brightness Distribution; H Ii Regions; Polarized Radiation; Astrophysics; INFRARED: SOURCES; NEBULAE: SUPERNOVA REMNANTS; POLARIZATION; RADIO SOURCES: IDENTIFICATIONS full text sources ADS | data products SIMBAD (86)