Distances to Supernova Remnants G$20.4+0.1$, G$24.7-0.6$ and G$28.6-0.1$ and New Molecular Cloud Associations

Abstract

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 Galactic Plane Survey (VGPS) for extraction of HI absorption spectra. Analysing HI absorption spectra, ${}^{13}$CO emission spectra, and HI and ${}^{13}$CO 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 G$20.4+0.1$, G$24.7-0.6$ and G$28.6-0.1$ are $7.8\pm 0.5$ kpc, $3.8\pm 0.2$ kpc and $9.6\pm 0.3$ kpc, respectively.

10 pages, 14 figures

References in corpus (5)

• The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
• The VLA Galactic Plane Survey
• Discovery of 35 New Supernova Remnants in the Inner Galaxy
• The Electron Temperature Gradient in the Galactic Disk
• Energetics and Birth Rates of Supernova Remnants in the Large Magellanic Cloud

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• A Complete Catalogue of Dusty Supernova Remnants
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• Distance and Evolutionary States of Supernova Remnant G18.9-1.1 and Candidate G28.6+0.0
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• HAWC Study of Very-High-Energy $\gamma$-ray Spectrum of HAWC J1844-034
• Unraveling the Nature of HAWC J1844-034 with Fermi-LAT Data Analysis and Multi-wavelength Modeling