期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 477, 期 2, 页码 2230-2237出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/sty817
关键词
ISM: supernova remnants; radio continuum: ISM; radio lines: ISM
资金
- Natural Sciences and Engineering Research Council of Canada
Accurate distances to supernova remnants (SNRs) are crucial in determining their size, age, luminosity, and evolutionary state. To determine distances, we chose three SNRs from the VLA (Very Large Array) Galactic Plane Survey for extraction of HI absorption spectra. Analysing HI absorption spectra, (CO)-C-13 emission spectra, and HI and (CO)-C-13 channel maps, kinematic velocities (or their limits) to the three SNRs were calculated. The three SNRs are probably associated with molecular clouds and the new distance to G20.4 + 0.1, G24.7 - 0.6, and G28.6 -0.1 are 7.8 +/- 0.5 kpc, 3.8 +/- 0.2 kpc, and 9.6 +/- 0.3 kpc, respectively.
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