不完全条件恒星质量函数：用BOSS观测揭示Galerkin在0.1 < Z < 0.8时的恒星质量函数
The Incomplete Conditional Stellar Mass Function: Unveiling the Stellar Mass Functions of Galaxies at 0.1 < Z < 0.8 from BOSS Observations
摘要：
我们提出了一种新的方法来约束失踪的分数的星系星系使用星系聚类测量星系条件恒星质量函数（CSMF）的框架，这是适用于调查遭受显着的样本选择效应。星系团测量对星系的随机抽样（缺失分数）不敏感，被广泛用于约束星晕质量关系（SHMR）。通过在CSMF模型中引入一个缺失部分（不完全性）分量，我们利用不完全恒星质量函数和星系团同时约束缺失部分和SHMR.基于模拟星系表和几个典型的缺失部分模型的测试表明，该方法可以准确地恢复缺失部分和星系SHMR，从而为我们提供了可靠的星系恒星质量函数的测量。然后我们将它应用于红移范围为0.1<z<0.8的$M_*>10^{11}M_\odot$星系的重子振荡光谱巡天（BOSS）。我们发现，在z<0.6时，BOSS的样本完整性超过80%，但在较高的红移时下降到约30%。在考虑了这些完整性因素后，我们在这一最大的星系红移巡天中提供了红移范围为0.1<z<0.8的具有$10^{11}M_\odot<M_*<10^{12}M_\odot$的星系以及SHMR的恒星质量函数的精确测量。
英文摘要：
We propose a novel method to constrain the missing fraction of galaxies using galaxy clustering measurements in the galaxy conditional stellar mass function (CSMF) framework, which is applicable to surveys that suffer significantly from sample selection effects. The clustering measurements, which are not sensitive to the random sampling (missing fraction) of galaxies, are widely used to constrain the stellar-halo mass relation (SHMR). By incorporating a missing fraction (incompleteness) component into the CSMF model (ICSMF), we use the incomplete stellar mass function and galaxy clustering to simultaneously constrain the missing fractions and the SHMRs. Tests based on mock galaxy catalogs with a few typical missing fraction models show that this method can accurately recover the missing fraction and the galaxy SHMR, and hence provides us reliable measurements of the galaxy stellar mass functions. We then apply it to the Baryon Oscillation Spectroscopic Survey (BOSS) over the redshift range of 0.1<z<0.8 for galaxies of $M_*>10^{11}M_\odot$. We find the sample completeness for BOSS is over 80% at z<0.6, but decreases at higher redshifts to about 30%. After taking these completeness factors into account, we provide accurate measurements of the stellar mass functions for galaxies with $10^{11}M_\odot<M_*<10^{12}M_\odot$, as well as the SHMRs, over the redshift range 0.1<z<0.8 in this largest galaxy redshift survey.
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。
