A Versatile and Accurate Method for Halo Mass Determination from Phase-space Distribution of Satellite Galaxies
A Versatile and Accurate Method for Halo Mass Determination from Phase-space Distribution of Satellite Galaxies
复制标题
一种根据卫星星系相空间分布确定晕质量的通用且准确的方法
DOI:
10.3847/1538-4357/ab4f6d
复制
发表时间:
2019-10
影响因子:
4.9
通讯作者:
Jing Y. P.
中科院分区:
文献类型:
--
作者:
Li Zhao-Zhou;Qian Yong-Zhong;Han Jiaxin;Wang Wenting;Jing Y. P.
We propose a versatile and accurate method to estimate the halo mass and concentration from the kinematics of satellite galaxies. We construct the 6D phase-space distribution function of satellites from a cosmological simulation based on the similarity of internal dynamics for different halos. Within the Bayesian statistical framework, not only can we efficiently infer the halo mass and concentration, we can also treat various observational effects, including the selection function, incomplete data, and measurement errors, in a rigorous and straightforward manner. Through tests with mock samples, we show that our method is valid and accurate, as well as more precise than pure steady-state methods. It can constrain the halo mass to within ∼20% using only 20 tracers and has a small intrinsic uncertainty of ∼10%. In addition to the clear application to the Milky Way and similar galaxies, our method can be extended to galaxy groups or clusters.
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影响因子:
4.8
作者:
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通讯作者:
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作者:
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DOI:
10.1111/j.1365-2966.2010.17946.x
发表时间:
2010-11
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DOI:
10.1146/annurev-astro-091918-104453
发表时间:
2019-01
影响因子:
33.3
作者:
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通讯作者:
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DOI:
10.1017/s1743921319008020
发表时间:
2019-06
期刊:
Proceedings of the International Astronomical Union
影响因子:
--
作者:
Jiaxin Han;Wenting Wang;Zhaozhou Li
通讯作者:
Jiaxin Han;Wenting Wang;Zhaozhou Li