The local properties of supernova explosions and their host galaxies
The local properties of supernova explosions and their host galaxies
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DOI：
10.1088/1674-4527/19/8/121
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发表时间：
2019-07
影响因子：
1.8
通讯作者：
Li Zhou;Yan-chun Liang;J. Ge;X. Shao;Xiaoyan Chen;L. Deng
中科院分区：
文献类型：
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作者：
Li Zhou;Yan-chun Liang;J. Ge;X. Shao;Xiaoyan Chen;L. Deng
我们的目标是了解其所在星系中超新星(SN)爆炸地点的性质，并与这些所在星系的全球性质进行比较。我们使用阿帕奇点天文台(MANGA)绘制邻近星系的积分场光谱仪(IFS)生成了11个SN宿主星系的参数属性的二维图。对这些样本星系的速度场、恒星形成率、氧丰度、恒星质量等性质进行了详细的分析，结果表明，该样本星系在z∼0.03附近发生了红移，高于前人的相关工作。较高的红移分布使我们能够获得更远的SN宿主星系的性质。由积分光谱估算的金属丰度(气相氧丰度)能以较小的偏差代表SN爆炸现场的局部金属丰度。除了NGC6387外，我们的样本中所有的宿主星系都是富金属星系(12+log(O/H)>；8.5)，这意味着SNE可能更倾向于在富金属星系中爆炸。全球气相氧丰度与宿主星系的恒星质量呈正相关。我们还试图比较SNE Ia和SNE II的宿主星系的差异。在我们的样本中，SNE Ia和SNE II都可以在正常星系中爆炸，但SNE II也可以在相互作用或合并系统中爆炸，在这个系统中，恒星正在形成。
We aim to understand the properties at the locations of supernova (SN) explosions in their host galaxies and compare with the global properties of these host galaxies. We use the integral field spectrograph (IFS) of Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) to generate 2D maps of the parameter properties for 11 SN host galaxies. The sample galaxies are analyzed one by one in detail in terms of their properties of velocity field, star formation rate, oxygen abundance, stellar mass, etc. This sample of SN host galaxies has redshifts around z ∼ 0.03 , which is higher than those of previous related works. The higher redshift distribution allows us to obtain the properties of more distant SN host galaxies. Metallicity (gas-phase oxygen abundance) estimated from integrated spectra can represent the local metallicity at SN explosion sites with small bias. All the host galaxies in our sample are metal-rich galaxies (12+ log (O/H) > 8.5 ) except for NGC 6387, which means SNe may be more inclined to explode in metallicity-rich galaxies. There is a positive relation between global gas-phase oxygen abundance and the stellar mass of host galaxies. We also try to compare the differences of the host galaxies between SNe Ia and SNe II. In our sample, both SNe Ia and SNe II can explode in normal galaxies, but SNe II can also explode in an interacting or a merging system, in which star formation is occurring in the galaxy.