Distances are found for four supernova remnants without previous distance measurements. H I spectra and H I channel maps are used to determine the maximum velocity of H I absorption for the four supernova remnants (SNRs). We examined 13CO emission spectra and channel maps to look for possible molecular gas associated with each SNR, but did not find any. The resulting distances for the SNRs are 3.5±0.2 kpc (G24.7+0.6), 4.7±0.3 kpc (G29.6+0.1), 4.1±0.5 kpc (G41.5+0.4) and 4.5±0.4−9.0±0.4 kpc (G57.2+0.8).
@article{arxiv.1712.04515,
title = {New Distances to Four Supernova Remnants},
author = {S. Ranasinghe and D. A. Leahy and Wenwu Tian},
journal= {arXiv preprint arXiv:1712.04515},
year = {2018}
}