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arXiv 1209.4428astro-ph.GA
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超新星遗迹CO.1+0.3的J=2-1观测

CO J=2-1 Observations toward the Supernova Remnant G54.1+0.3

Jung-Won Lee, Bon-Chul Koo, Jeong-Eun Lee

摘要:

我们提出了12 CO J = 2-1线观测G54.1+0.3,一个复合超新星遗迹与中红外(MIR)环周围的中央脉冲星风星云(PWN)。我们绘制了PWN及其相关MIR环周围12' x 9'的区域。我们确认了两个速度分量,已被提出可能是相互作用的PWN/MIR环路;+53公里/秒的云,出现在接触的PWN和+23公里/秒的云,CO排放与MIR环路重合。我们还没有发现这两种云之间相互作用的直接证据。相反,我们在超新星遗迹的西部内部探测到一个5 '长的弧形云,速度为+15-+23 km/s,系统速度梯度为~3 km/s/arcmin,宽线发射CO气体,宽度(FWHM)<7 km/s。我们讨论他们与超新星遗迹的关联。

英文摘要:

We present 12CO 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 mapped an area of 12' x 9' around the PWN and its associated MIR loop. We confirm two velocity components that had been proposed to be possibly interacting with the PWN/MIR-loop; the +53 km/s cloud that appears in contact with the eastern boundary of the PWN and the +23 km/s cloud that has CO emission coincident with the MIR loop. 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 with a systematic velocity gradient of ~3 km/s/arcmin and broad-line emitting CO gas having widths (FWHM) of <7 km/s in the western interior of the supernova remnant. We discuss their association with the supernova remnant.

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