论文标题
检查来自ASAS-SN的IA型超新星的低亮度宿主的特性
Examining the Properties of Low-Luminosity Hosts of Type Ia Supernovae from ASAS-SN
论文作者
论文摘要
我们使用发射线测量金属金属率和星形形成速率，对由全天空自动化的超新体自动化调查（ASAS-SN）检测到了44个低亮度宿主星系的光谱分析。我们发现，尽管我们的样品的恒星形成活动代表了通用星系，但有证据表明，与类似质量的一般质量相比，我们样品中最低的质量SN IA宿主星系（log（$ m_ \ star/m_ \ odot $）$ <8 $）具有高金属性。我们还确定了5个具有特别高金属性的星系的子集。这凸显了对更低纤维性，低质量SN IA宿主星系的光谱分析的需求，以测试这些结论的鲁棒性及其对我们对SN IA祖细胞的理解的潜在影响。
We present a spectroscopic analysis of 44 low-luminosity host galaxies of Type Ia supernovae (SNe Ia) detected by the All-Sky Automated Survey for Supernovae (ASAS-SN), using the emission lines to measure metallicities and star formation rates. We find that although the star formation activity of our sample is representative of general galaxies, there is some evidence that the lowest-mass SN Ia host galaxies (log($M_\star/M_\odot$)$<8$) in our sample have high metallicities compared to general galaxies of similar masses. We also identify a subset of 5 galaxies with particularly high metallicities. This highlights the need for spectroscopic analysis of more low-luminosity, low-mass SN Ia host galaxies to test the robustness of these conclusions and their potential impact on our understanding of SN Ia progenitors.
