The Influence of Host Galaxies in Type Ia Supernova Cosmology
文献类型：期刊论文
| 作者 | Uddin,Syed A.1,2,3; Mould,Jeremy2,3; Lidman,Chris3,4; Ruhlmann-Kleider,Vanina5; Zhang,Bonnie R.3,6 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2017-10-11 |
| 卷号 | 848期号:1 |
| 关键词 | dark energy galaxies: general supernovae: general |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aa8df7 |
| 英文摘要 | Abstract We use a sample of 1338 spectroscopically confirmed and photometrically classified Type Ia supernovae (SNe Ia) sourced from Carnegie Supernova Project, Center for Astrophysics Supernova Survey, Sloan Digital Sky Survey-II, and SuperNova Legacy Survey SN samples to examine the relationships between SNe Ia and the galaxies that host them. Our results provide confirmation with improved statistical significance that SNe Ia, after standardization, are on average more luminous in massive hosts (significance?>5σ), and decline more rapidly in massive hosts (significance?>9σ) and in hosts with low specific star formation rates (significance?>8σ). We study the variation of these relationships with redshift and detect no evolution. We split SNe Ia into pairs of subsets that are based on the properties of the hosts and fit cosmological models to each subset. Including both systematic and statistical uncertainties, we do not find any significant shift in the best-fit cosmological parameters between the subsets. Among different SN Ia subsets, we find that SNe Ia in hosts with high specific star formation rates have the least intrinsic scatter (σint = 0.08 ± 0.01) in luminosity after standardization. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-848-1-AA8DF7 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/22766]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, Jiangshu, China; saushuvo@gmail.com 2.Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Melbourne, VIC, Australia 3.Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), Australia 4.Australian Astronomical Observatory, North Ryde, NSW, Australia 5.CEA, Centre de Saclay, Irfu/SPP, F-91191 Gif-sur-Yvette, Paris, France 6.Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia |
| 推荐引用方式 GB/T 7714 | Uddin,Syed A.,Mould,Jeremy,Lidman,Chris,et al. The Influence of Host Galaxies in Type Ia Supernova Cosmology[J]. The Astrophysical Journal,2017,848(1). |
| APA | Uddin,Syed A.,Mould,Jeremy,Lidman,Chris,Ruhlmann-Kleider,Vanina,&Zhang,Bonnie R..(2017).The Influence of Host Galaxies in Type Ia Supernova Cosmology.The Astrophysical Journal,848(1). |
| MLA | Uddin,Syed A.,et al."The Influence of Host Galaxies in Type Ia Supernova Cosmology".The Astrophysical Journal 848.1(2017). |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。