Exploring the cosmic evolution of habitability with galaxy merger trees

Exploring the cosmic evolution of habitability with galaxy merger trees
复制标题

利用星系合并树探索宇宙宜居性演化

DOI:
10.1093/mnras/stx3305
复制
发表时间:
2018
影响因子:
4.8
通讯作者:
Stanway E
Stanway E
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Stanway E

文献摘要

参考文献

被引文献

相似文献

我们将结合暗物质晕合并树的半解析星系演化模型推断出的星系特性与结合二元相互作用的恒星族合成模型中作为金属丰度函数的超新星和伽马射线爆发率的新估计相结合。我们利用这些来探索受高能天体物理瞬变辐射的星系的恒星质量部分及其在宇宙时间内的演化,从而探索可能适合像我们这样的生命居住的部分。我们发现宇宙中 18% 的恒星质量可能在过去 260 迈里受到了辐射,其中伽玛暴占据了主导地位。我们没有看到受辐射恒星质量分数对恒星质量或星系环境丰富度的强烈依赖性。我们将代表性的合并树视为本地群的类比,并发现所有质量的星系在过去 6 Gyr 中都保留了较高的宜居比例(> 40%),但也存在所有质量的星系,其合并历史和相关的恒星形成已使星系实际上无法居住。这说明在评估宜居性的宇宙演化时需要考虑详细的合并树。
We combine inferred galaxy properties from a semi-analytic galaxy evolution model incorporating dark matter halo merger trees with new estimates of supernova and gamma-ray burst rates as a function of metallicity from stellar population synthesis models incorporating binary interactions. We use these to explore the stellar-mass fraction of galaxies irradiated by energetic astrophysical transients and its evolution over cosmic time, and thus the fraction which is potentially habitable by life like our own. We find that 18 per cent of the stellar mass in the Universe is likely to have been irradiated within the last 260 Myr, with GRBs dominating that fraction. We do not see a strong dependence of irradiated stellar-mass fraction on stellar mass or richness of the galaxy environment. We consider a representative merger tree as a Local Group analogue, and find that there are galaxies at all masses which have retained a high habitable fraction (>40 per cent) over the last 6 Gyr, but also that there are galaxies at all masses where the merger history and associated star formation have rendered galaxies effectively uninhabitable. This illustrates the need to consider detailed merger trees when evaluating the cosmic evolution of habitability.
DOI: 10.1111/j.1365-2966.2006.09994.x
发表时间: 2006-02
影响因子: 4.8
作者:
D. Croton;G. Kauffmann;V. Springel;S. White;G. Lucia;A. Jenkins;J. Navarro;C. Frenk;Liang Gao-Lian
通讯作者: D. Croton;G. Kauffmann;V. Springel;S. White;G. Lucia;A. Jenkins;J. Navarro;C. Frenk;Liang Gao-Lian
极地冰中超新星地层记录的证据
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
G. Dreschhoff;C. Laird
通讯作者: C. Laird
“这种人生观的伟大”:银河宜居区的 N 体模拟模型
DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
B. Vukotić;Dominik Steinhauser;G. Martinez;M. Ćirković;M. Micic;S. Schindler
通讯作者: S. Schindler
伽马射线暴特性的天体物理学和天体生物学意义
DOI: 10.1086/338329
发表时间: 1999
期刊: The Astrophysical Journal
影响因子: --
作者:
J. Scalo;J. Craig Wheeler
通讯作者: J. Craig Wheeler
在 Konus-WIND 短爆发样本中寻找附近星系中软伽马射线中继器的巨大耀斑
DOI: 10.1093/mnras/stu2436
发表时间: 2014
影响因子: 4.8
作者:
D. Svinkin;K. Hurley;R. Aptekar';S. Golenetskii;D. Frederiks
通讯作者: D. Frederiks