CO J=2-1 LINE OBSERVATIONS TOWARD THE SUPERNOVA REMNANT G54.1+0.3

被引:9
|
作者
Lee, Jung-Won [1 ]
Bon-Chul, K. [2 ]
Lee, Jeong-Eun [3 ]
机构
[1] Korea Astron & Space Sci Inst, Taejon 305348, South Korea
[2] Seoul Natl Univ, Dept Phys & Astron, Seoul 151742, South Korea
[3] Kyung Hee Univ, Dept Astron & Space Sci, Yongin 446701, South Korea
基金
新加坡国家研究基金会;
关键词
ISM: individual(G54.1+0.3); ISM: molecules; radio lines: ISM; supernova remnants; WIND NEBULA G54.1+0.3; PULSAR; RADIO; DISCOVERY; FIELD;
D O I
10.5303/JKAS.2012.45.5.117
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present (CO)-C-12 J = 2-1 line observations of G54.1+0.3, a composite supernova remnant with a mid-infrared (MIR) loop surrounding the central pulsar wind nebula (PWN). We map an area of 12' x 9' around the PWN and its associated MIR loop. We confirm two velocity components that have been proposed to be possibly interacting with the PWN/MIR-loop; the +53 km s(-1) cloud, which appears in contact with the eastern boundary of the PWN and the +23 km s(-1) cloud, which has CO emission coincident with the MIR loop. However, we have not found a direct evidence for the interaction in either of these clouds. Instead, we detected an 5'-long arc-like cloud at +15-+23 km s(-1) with a systematic velocity gradient of similar to 3 km s(-1) arcmin(-1) and broad-line emitting CO gas with widths (FWHM) of less than or similar to 7 km s(-1) in the western interior of the supernova remnant. We discuss their association with the supernova remnant.
引用
收藏
页码:117 / 125
页数:9
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