XMM-Newton view of the N 206 superbubble in the Large Magellanic Cloud
XMM-Newton view of the N 206 superbubble in the Large Magellanic Cloud
复制标题
大麦哲伦云中 N 206 超级气泡的 XMM-牛顿视图
DOI:
10.1051/0004-6361/201219532
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发表时间:
2012
影响因子:
6.5
通讯作者:
Points
中科院分区:
文献类型:
--
作者:
Kavanagh;Sasaki;Points
AimsWe perform an analysis of the X-ray superbubble in the N 206 H ii region in the Large Magellanic Cloud using current generation facilities to gain a better understanding of the physical processes at work in the superbubble and to improve our knowledge of superbubble evolution.MethodsWe usedXMM-Newtonobservations of the N 206 region to produce images and extract spectra of the superbubble diffuse emission. Morphological comparisons with Hαimages from the Magellanic Cloud Emission Line Survey were performed, and spectral analysis of the diffuse X-ray emission was carried out. We derived the physical properties of the hot gas in the superbubble based on the results of the spectral analysis. We also determined the total energy stored in the superbubble and compared this to the expected energy input from the stellar population to assess the superbubble growth rate discrepancy for N 206.ResultsWe find that the brightest region of diffuse X-ray emission is confined by a Hαshell, consistent with the superbubble model. In addition, faint emission extending beyond the Hαshell was found, which we attribute to a blowout region. The spectral analysis of both emission regions points to a hot shocked gas as the likely origin of the emission. We determine the total energy stored in the bubble and the expected energy input by the stellar population. However, due to limited data on the stellar population, the input energy is poorly constrained and, consequently, no definitive indication of a growth rate discrepancy is seen.ConclusionsUsing the high-sensitivity X-ray data fromXMM-Newtonand optical data from the Magellanic Cloud Emission Line Survey has allowed us to better understand the physical properties of the N 206 superbubble and address some key questions of superbubble evolution.
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1998
期刊:
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影响因子:
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发表时间:
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