2017/09/04 by Yingjie Li, Ye Xu, Xi Chen +4 · 1 citation
Chemistry · Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Astrophysics and Star Formation Studies #Atomic physics #Chemistry #Excited state #Galactic Center #Gamma-ray bursts and supernovae #Methanol #Observatory #Physics #Stars #Supernova #Telescope #astro-ph.GA
paper · pdf · doi:10.1088/1674-4527/17/12/125
published in Research in Astronomy and Astrophysics 17(12), 125 (IOP Publishing) · 16 pages, 8 figures, accepted by RAA
arxiv created 2017/09/04 · openalex publication_date 2017/12/01 · arxiv updated 2017/12/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract We report on a 95 GHz ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mn>8</mml:mn> </mml:mrow> <mml:mrow> <mml:mn>0</mml:mn> </mml:mrow> </mml:msub> <mml:mo>−</mml:mo> <mml:msub> <mml:mrow> <mml:mn>7</mml:mn> </mml:mrow> <mml:mrow> <mml:mn>1</mml:mn> </mml:mrow> </mml:msub> </mml:math> A + ) methanol (CH 3 OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants (SNRs) with angular size <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mo>≲</mml:mo> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mrow> <mml:mo>′</mml:mo> </mml:mrow> </mml:msup> </mml:math> were observed, but emission was only detected in three SNRs near the Galactic center (Sgr A East, G 0.1–0.1 and G 359.92–0.09). CH 3 OH emission mainly surrounds the SNRs and can be decomposed into nine spatial peaks with the velocity range of eight peaks being (−30, 70) km s −1 , and the other is (70, 120) km s −1 . They are probably excited by interaction with these SNRs and adjacent molecular gas in the central molecular zone (CMZ), although star formation may play an important role in exciting CH 3 OH emission in some regions of CMZ. We infer that tidal action is unlikely to be an excitation source for CH 3 OH emission.