2009/05/04 by H. S. Liszt
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Astrophysics and Star Formation Studies #Gamma-ray bursts and supernovae #Maser #Molecular cloud #Physics #Resolution (logic) #Sky #Stars #Supernova #Supernova remnant #astro-ph.GA
paper · pdf · doi:10.1051/0004-6361/200912421
6 Pages, 3 figures submitted to A&A 4 May 2009
arxiv created 2009/05/04 · openalex publication_date 2009/11/04 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
<i>Aims. <i/> We searched for signs of interaction of radio supernova remnants with ambient molecular gas in the sky field just West of the SNR W28.<i>Methods. <i/>We analyze a datacube of CO emission having 1′ and 1.2 km s<sup>-1<sup/> resolution, made with on-the-fly mapping over the region <sup>o<sup/>.<i>Results. <i/>Although broad CO lines characteristic of shocked gas were not seen in this kinematically complex region, a bright (14 K), new, marginally-resolved km s<sup>-1<sup/> outflow source G5.638+0.233 and a comparably bright rim of CO emission were found at/around the periphery of SNR G5.55+0.12. Most of the periphery of SNR G5.71-0.08 is surrounded by a bright rim of CO emission. CO emission at the 7 km s<sup>-1<sup/> velocity of a 1720 OH maser spot near SNR G5.70-0.12 is very bright, 19 K, but gas at -21 km s<sup>-1<sup/> is widespread over the region and CO emission is rather weak toward the OH maser spots at this velocity north of G5.4-1.2. Other very bright CO lines in the region are associated with H II regions, i.e. 27 K toward W28A2 = G5.89-0.39 and 15 K toward an MSX-IR source at <sup>o<sup/>, <sup>o<sup/> which is probably the exciting agent of a separate, classical HII region just north of W28A2.