首页|Establishing HI mass vs.stellar mass and halo mass scaling relations using an abundance matching method

Establishing HI mass vs.stellar mass and halo mass scaling relations using an abundance matching method

扫码查看
原文链接
  • 万方数据
Establishing HI mass vs.stellar mass and halo mass scaling relations using an abundance matching method
We combined data from the Sloan Digital Sky Survey(SDSS)and the Arecibo Legacy Fast ALFA Survey(ALFALFA)to es-tablish the HI mass vs.stellar mass and halo mass scaling relations using an abundance matching method that is free of the Malmquist bias.To enable abundance matching,a cross-match between the SDSS DR7 galaxy group sample and the ALFALFA HI sources provides a catalog of 16520 HI-galaxy pairs within 14270 galaxy groups(halos).By applying the observational com-pleteness reductions for both optical and HI observations,we used the remaining 8180 ALFALFA matched sources to construct the model constraints.Taking into account the dependence of HI mass on both the galaxy and group properties,we establish two sets of scaling relations:one with a combination of stellar mass,(g-r)color and halo mass,and the other with stellar mass,specific star-formation rate(sSFR),and halo mass.We demonstrate that our models can reproduce the HI mass component as both stellar mass and halo mass.Additional tests showed that the conditional HI mass distributions as a function of the cosmic web type and the satellite fractions were well recovered.

galaxy groupsneutral hydrogenhalosstatistical

Yi Lu、Xiaohu Yang、Chengze Liu、Haojie Xu、Antonios Katsianis、Hong Guo、Xiaoju Xu、Yizhou Gu

展开 >

Key Laboratory for Research in Galaxies and Cosmology,Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China

Tsung-Dao Lee Institute,and Shanghai Key Laboratory for Particle Phvsics and Cosmology,Shanghai Jiao Tong University Shanghai 200240,China

Department of Astronomy,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China

School of Physics and Astronomy,Sun Yat-sen University,Zhuhai Campus,Zhuhai 519082,China

展开 >

galaxy groups neutral hydrogen halos statistical

2024

10.1007/s11433-024-2440-3

中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
年,卷(期)：2024.67(11)