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Title: Interaction between supernova remnant G22.7–0.2 and the ambient molecular clouds

Abstract

We have carried out {sup 12}CO (J = 1-0 and 2-1), {sup 13}CO (J = 1-0), and C{sup 18}O (J = 1-0) observations in the direction of the supernova remnant (SNR) G22.7–0.2. A filamentary molecular gas structure, which is likely part of a larger molecular complex with V {sub LSR} ∼ 75-79 km s{sup –1}, is detected and is found to surround the southern boundary of the remnant. In particular, the high-velocity wing (77-110 km s{sup –1}) in the {sup 12}CO (J = 1-0 and J = 2-1) emission shows convincing evidence of the interaction between SNR G22.7–0.2 and the 75-79 km s{sup –1} molecular clouds (MCs). Spectra with redshifted profiles, a signature of shocked molecular gas, are seen in the southeastern boundary of the remnant. The association between the remnant and the 77 km s{sup –1} MCs places the remnant at the near distance of 4.4 ± 0.4 kpc, which agrees with a location on the Scutum-Crux arm. We suggest that SNR G22.7–0.2, SNR W41, and H II region G022.760-0.485 are at the same distance and are associated with GMC G23.0–0.4.

Authors:
; ;  [1]; ;  [2]
  1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China)
  2. Department of Astronomy, Nanjing University, 163 Xianlin Avenue, Nanjing 210093 (China)
Publication Date:
OSTI Identifier:
22370137
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 796; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CARBON 12; CARBON 13; CARBON MONOXIDE; COSMIC GASES; DISTANCE; ELEMENT ABUNDANCE; EMISSION; INTERACTIONS; MOLECULES; OXYGEN 18; RED SHIFT; SPECTRA; SUPERNOVA REMNANTS; VELOCITY

Citation Formats

Su, Yang, Yang, Ji, Zhou, Xin, Zhou, Ping, and Chen, Yang. Interaction between supernova remnant G22.7–0.2 and the ambient molecular clouds. United States: N. p., 2014. Web. doi:10.1088/0004-637X/796/2/122.
Su, Yang, Yang, Ji, Zhou, Xin, Zhou, Ping, & Chen, Yang. Interaction between supernova remnant G22.7–0.2 and the ambient molecular clouds. United States. https://doi.org/10.1088/0004-637X/796/2/122
Su, Yang, Yang, Ji, Zhou, Xin, Zhou, Ping, and Chen, Yang. 2014. "Interaction between supernova remnant G22.7–0.2 and the ambient molecular clouds". United States. https://doi.org/10.1088/0004-637X/796/2/122.
@article{osti_22370137,
title = {Interaction between supernova remnant G22.7–0.2 and the ambient molecular clouds},
author = {Su, Yang and Yang, Ji and Zhou, Xin and Zhou, Ping and Chen, Yang},
abstractNote = {We have carried out {sup 12}CO (J = 1-0 and 2-1), {sup 13}CO (J = 1-0), and C{sup 18}O (J = 1-0) observations in the direction of the supernova remnant (SNR) G22.7–0.2. A filamentary molecular gas structure, which is likely part of a larger molecular complex with V {sub LSR} ∼ 75-79 km s{sup –1}, is detected and is found to surround the southern boundary of the remnant. In particular, the high-velocity wing (77-110 km s{sup –1}) in the {sup 12}CO (J = 1-0 and J = 2-1) emission shows convincing evidence of the interaction between SNR G22.7–0.2 and the 75-79 km s{sup –1} molecular clouds (MCs). Spectra with redshifted profiles, a signature of shocked molecular gas, are seen in the southeastern boundary of the remnant. The association between the remnant and the 77 km s{sup –1} MCs places the remnant at the near distance of 4.4 ± 0.4 kpc, which agrees with a location on the Scutum-Crux arm. We suggest that SNR G22.7–0.2, SNR W41, and H II region G022.760-0.485 are at the same distance and are associated with GMC G23.0–0.4.},
doi = {10.1088/0004-637X/796/2/122},
url = {https://www.osti.gov/biblio/22370137}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 796,
place = {United States},
year = {Mon Dec 01 00:00:00 EST 2014},
month = {Mon Dec 01 00:00:00 EST 2014}
}