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arXiv 2109.12366astro-ph.GA
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SDSS-IV MaNGA中超新星宿主星系的空间分辨性质

Spatially Resolved Properties of Supernova Host Galaxies in SDSS-IV MaNGA

Hongxuan Zhang, Yanmei Chen, Yong Shi, Min Bao, Xiaoling Yu

摘要:

我们crossmatch星系映射附近Galerkin在阿帕奇点天文台与开放超新星目录,获得总共132个SNe内的MANGA束。这132个SNe可分为67个Ia型和65个CC型。我们统计地研究了超新星宿主星系的全局和局部性质。Ia型SNe分布在恒星形成星系和静止星系中,而CC型SNe都分布在恒星形成的主序中。随着恒星质量的增加,Ia型/CC型的数量比增加。我们发现:(1)Ia型超新星宿主星系和具有相似恒星质量和SFR分布的对照星系之间的相互作用可能性和环境没有明显差异,只是Ia型超新星更倾向于出现在比对照星系更突出的星系中。对于CC型SNe,其宿主星系和控制星系在星系形态、相互作用可能性以及环境上没有差异;(2)SN位置比星系中心具有更小的速度色散、更低的金属丰度和更年轻的恒星星族。这是所有这些参数的半径梯度的自然结果。SN位置及其相对于星系中心的对称位置,以及有效半径相似的区域,其[Mg/Fe]、气相金属丰度、气体速度色散和恒星星族年龄都非常相似。

英文摘要:

We crossmatch galaxies from Mapping Nearby Galaxies at Apache Point Observatory with the Open Supernova Catalog, obtaining a total of 132 SNe within MaNGA bundle. These 132 SNe can be classified into 67 Type Ia and 65 Type CC. We study the global and local properties of supernova host galaxies statistically. Type Ia SNe are distributed in both star-forming galaxies and quiescent galaxies, while Type CC SNe are all distributed along the star-forming main sequence. As the stellar mass increases, the Type Ia/CC number ratio increases. We find: (1) there is no obvious difference in the interaction possibilities and environments between Type Ia SN hosts and a control sample of galaxies with similar stellar mass and SFR distributions, except that Type Ia SNe tend to appear in galaxies which are more bulge-dominated than their controls. For Type CC SNe, there is no difference between their hosts and the control galaxies in galaxy morphology, interaction possibilities as well as environments; (2) the SN locations have smaller velocity dispersion, lower metallicity, and younger stellar population than galaxy centers. This is a natural result of radius gradients of all these parameters. The SN location and the its symmetrical position relative to the galaxy center, as well as regions with similar effective radii have very similar [Mg/Fe], gas-phase metallicity, gas velocity dispersion and stellar population age.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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