Galactic Supernova Remnant Candidates Discovered by THOR
| Autor: | Juan D. Soler, Alyssa A. Goodman, James Urquhart, H. Linz, Yu-Sa Wang, Jeroen Stil, Karl M. Menten, Ralf S. Klessen, Th. Henning, Ed Churchwell, Frank Bigiel, Simon C. O. Glover, Juergen Ott, L. D. Anderson, Henrik Beuther, Nirupam Roy, Michael Rugel, M. H. Heyer, Steven N. Longmore, S. Bihr |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Brightness
Milky Way Astrophysics::High Energy Astrophysical Phenomena Population FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences QB460 0103 physical sciences Supernova remnant education 010303 astronomy & astrophysics QC Astrophysics::Galaxy Astrophysics QB Physics education.field_of_study Spiral galaxy 010308 nuclear & particles physics Astronomy and Astrophysics Galactic plane Astrophysics - Astrophysics of Galaxies Galaxy Supernova Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) |
| Zdroj: | Astronomy & Astrophysics |
| ISSN: | 0004-6361 2329-1273 |
| Popis: | There is a considerable deficiency in the number of known supernova remnants (SNRs) in the Galaxy compared to that expected. Searches for extended low-surface brightness radio sources may find new Galactic SNRs, but confusion with the much larger population of HII regions makes identifying such features challenging. SNRs can, however, be separated from HII regions using their significantly lower mid-infrared (MIR) to radio continuum intensity ratios. We use the combination of high-resolution 1-2 GHz continuum data from The HI, OH, Recombination line survey of the Milky Way (THOR) and lower-resolution VLA 1.4 GHz Galactic Plane Survey (VGPS) continuum data, together with MIR data from the Spitzer GLIMPSE, Spitzer MIPSGAL, and WISE surveys to identify SNR candidates. To ensure that the candidates are not being confused with HII regions, we exclude radio continuum sources from the WISE Catalog of Galactic HII Regions, which contains all known and candidate H II regions in the Galaxy. We locate 76 new Galactic SNR candidates in the THOR and VGPS combined survey area of 67.4deg>l>17.5deg, |b Accepted for publication in A&A |
| Databáze: | OpenAIRE |
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