arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.14042astro-ph.GA
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不同类型超新星宿主星系的局部和全局性质

The local and global properties of different types of supernova host galaxies

Li Zhou, Yan-Chun Liang, Jun-Qiang Ge, Yi-Nan Zhu, Xu Shao, Hong Wu, Wei-Bin Shi, Li-Cai Deng

摘要:

利用SDSS Data Release 15中公开提供的Apache Point Observatory Mapping Nearby Galeries(MaNGA)的数据分析Pipeline(DAP)产品,分析了SN爆发点的局部性质和不同类型SN宿主星系的全局性质,探讨了不同类型SN爆发的环境。在我们的样本中,有67个SN宿主星系在MaNGA的视野中,其中包括32个Ia型,29个CCSNe,1个超亮SN(SLSN),1个I型和4个未分类的SNe类型,我们可以进行K-S检验进行分析,并得出统计上可靠的结果。由于样本量有限,我们无法在这项工作中消除质量依赖性,这可能是这项工作中呈现的属性趋势的真正驱动力。Ia型主恒星的全球恒星形成率(SFR)和EW(H $α$)平均略低于CCSN主恒星。Ia型主星系的质量比CCSN主星系的质量大$\sim$ 0.3倍,这意味着CCSNe与Ia型主星系的数量比将随着主星系质量的增加而减小。Ia型超新星宿主星系的恒星星族年龄平均比CCSN宿主星系的年龄大。不同类型的SN宿主在局部SFR密度($Σ\rm SFR$)、局部和全局气相氧丰度等方面没有显著差异。对于我们样本中的大多数星系,从SN主机的集成光谱估计的全球气相氧丰度可以代表在SN爆炸现场的本地气相氧丰度具有较小的偏差。

英文摘要:

By using Data Analysis Pipeline (DAP) products of Mapping Nearby Galaxies at Apache Point Observatory (MaNGA), which are publicly available from the SDSS Data Release 15, we analyze the local properties at the SN explosion sites and global properties of different types of SN host galaxies to explore the explosion environments of different types of SNe. In our sample, there are 67 SN host galaxies in the field of view of MaNGA, including 32 Type Ia, 29 CCSNe, 1 super-luminous SN (SLSN), 1 Type I and 4 unclassified type of SNe, with which we can perform the K-S test for analysis and derive statistically robust results. Due to the limited sample size, we couldn't remove the mass dependence in this work, which is likely the true driver of the trends for the properties presented in this work. The global star formation rate (SFR) and EW(H$α$) for SN Ia hosts is slightly lower than that for CCSN hosts on average. SN Ia host galaxies are $\sim$ 0.3 dex more massive than CCSN hosts, which implies that the number ratio of CCSNe to Type Ia SNe will decrease with the increasing of stellar mass of host galaxies. The stellar population age of SN Ia host galaxies is older than that of CCSN hosts on average. There is no significant difference between different types of SN hosts for some properties, including local SFR density ($Σ\rm SFR$), local and global gas-phase oxygen abundance. For most galaxies in our sample, the global gas-phase oxygen abundance estimated from the integrated spectra of SN hosts can represent the local gas-phase oxygen abundance at the SN explosion sites with small bias.

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