A NEW OPTICAL SURVEY OF SUPERNOVA REMNANT CANDIDATES IN M31
A NEW OPTICAL SURVEY OF SUPERNOVA REMNANT CANDIDATES IN M31
复制标题
对 M31 中超新星遗迹候选者的新光学调查
DOI：
10.1088/0004-637x/786/2/130
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
M. Lee
中科院分区：
文献类型：
--
作者：
Jong Hwan Lee;M. Lee
利用本星系群巡天的Hα和[S ii]图像，对M31中的光学发射超新星遗迹（SNRs）进行了巡天。使用这些图像，我们选择具有[S ii]：Hα > 0.4和圆形形状的对象。我们确定了156个SNR候选对象，其中76个是新发现的对象。我们根据两个标准对这些SNR候选者进行分类：SNR祖先类型（Ia型和核心塌陷（CC）SNR）和形态类型。Ia型和CC型SNR候选分别占总样本的23%和77%。大多数CC SNR候选者集中在旋臂中，而Ia型SNR候选者则分布在整个星系，包括内部区域。CC SNR候选在Hα和[S ii]中比类型Ia SNR候选更亮。我们推导出SNR候选的累积大小分布，发现具有17 <D < 50 pc的候选的分布很好地符合幂律指数α = 2.53 ± 0.04的幂律。这表明在本研究中识别的大多数SNR候选者似乎处于Sedov-Taylor相位。SNR候选的[S ii]：Hα分布是双峰的，峰值在[S ii]：Hα = 0.4和0.9处。这些SNR候选者的属性随银河系距离变化不大。Hα和[S ii]表面亮度与中心明亮的SNR候选者的X射线光度显示出良好的相关性。
We present a survey of optically emitting supernova remnants (SNRs) in M31 based on Hα and [S ii] images in the Local Group Survey. Using these images, we select objects that have [S ii]:Hα > 0.4 and circular shapes. We identify 156 SNR candidates, of which 76 are newly found objects. We classify these SNR candidates according to two criteria: the SNR progenitor type (Type Ia and core-collapse (CC) SNRs) and the morphological type. Type Ia and CC SNR candidates make up 23% and 77%, respectively, of the total sample. Most of the CC SNR candidates are concentrated in the spiral arms, while the Type Ia SNR candidates are rather distributed over the entire galaxy, including the inner region. The CC SNR candidates are brighter in Hα and [S ii] than the Type Ia SNR candidates. We derive a cumulative size distribution of the SNR candidates, finding that the distribution of the candidates with 17 <D < 50 pc is fitted well by a power law with the power-law index α = 2.53 ± 0.04. This indicates that most of the SNR candidates identified in this study appear to be in the Sedov–Taylor phase. The [S ii]:Hα distribution of the SNR candidates is bimodal, with peaks at [S ii]:Hα ∼ 0.4 and ∼0.9. The properties of these SNR candidates vary little with the galactocentric distance. The Hα and [S ii] surface brightnesses show a good correlation with the X-ray luminosity of the SNR candidates that are center-bright.
XMM-Newton M 31 大型巡天中发现的超新星遗迹和候选者
影响因子：
6.5
作者：
Sasaki;Pietsch;Haberl;Hatzidimitriou;Stiele;Williams
通讯作者：
Williams