Two New X-Ray/Optical/Radio Supernova Remnants in M31
Two New X-Ray/Optical/Radio Supernova Remnants in M31
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M31 中两个新的 X 射线/光学/射电超新星遗迹
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
S. Murray
中科院分区：
文献类型：
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作者：
B. Williams;L. Sjouwerman;A. Kong;J. Gelfand;Michael R. Garcia;S. Murray
我们将M31凸起的深（37 ks）钱德拉ACIS-S图像与同一区域的本地群巡天窄带光学数据和甚大阵列（VLA）无线电数据进行了比较。我们精确注册的图像显示了两个新的光学壳与x射线对应。这些壳的大小，[S]/Hα通量比，以及9和17 kyr年龄的超新星遗迹（SNRs）的典型x射线光谱特性。对互补VLA数据的分析揭示了无线电对应物，进一步证实了它们是信噪比。我们讨论并比较了这些信噪比在不同波长下的性质和形态。
We compare a deep (37 ks) Chandra ACIS-S image of the M31 bulge to Local Group Survey narrowband optical data and Very Large Array (VLA) radio data of the same region. Our precisely registered images reveal two new optical shells with X-ray counterparts. These shells have sizes, [S ]/Hα flux ratios, and X-ray spectral properties typical of supernova remnants (SNRs) with ages of 9 and 17 kyr. Analysis of complementary VLA data reveals the radio counterparts, further confirming that they are SNRs. We discuss and compare the properties and morphologies of these SNRs at the different wavelengths.