학술논문
Measuring the conditional luminosity and stellar mass functions of galaxies by combining the DESI LS DR9, SV3 and Y1 data
Document Type
Working Paper
Author
Wang, Yirong; Yang, Xiaohu; Gu, Yizhou; Xu, Xiaoju; Xu, Haojie; Wang, Yuyu; Katsianis, Antonios; Han, Jiaxin; He, Min; Zheng, Yunliang; Li, Qingyang; Wang, Yaru; Hong, Wensheng; Wang, Jiaqi; Tan, Zhenlin; Zou, Hu; Lange, Johannes Ulf; Hahn, ChangHoon; Behroozi, Peter; Aguilar, Jessica Nicole; Ahlen, Steven; Brooks, David; Claybaugh, Todd; Cole, Shaun; de la Macorra, Axel; Dey, Biprateep; Doel, Peter; Forero-Romero, Jaime E.; Honscheid, Klaus; Kehoe, Robert; Kisner, Theodore; Lambert, Andrew; Manera, Marc; Meisner, Aaron; Miquel, Ramon; Moustakas, John; Nie, Jundan; Poppett, Claire; Rezaie, Mehdi; Rossi, Graziano; Sanchez, Eusebio; Schubnell, Michael; Tarlé, Gregory; Weaver, Benjamin Alan; Zhou, Zhimin
Source
Subject
Language
Abstract
In this investigation, we leverage the combination of Dark Energy Spectroscopic Instrument Legacy imaging Surveys Data Release 9 (DESI LS DR9), Survey Validation 3 (SV3), and Year 1 (Y1) data sets to estimate the conditional luminosity and stellar mass functions (CLFs & CSMFs) of galaxies across various halo mass bins and redshift ranges. To support our analysis, we utilize a realistic DESI Mock Galaxy Redshift Survey (MGRS) generated from a high-resolution Jiutian simulation. An extended halo-based group finder is applied to both MGRS catalogs and DESI observation. By comparing the r and z-band luminosity functions (LFs) and stellar mass functions (SMFs) derived using both photometric and spectroscopic data, we quantified the impact of photometric redshift (photo-z) errors on the galaxy LFs and SMFs, especially in the low redshift bin at low luminosity/mass end. By conducting prior evaluations of the group finder using MGRS, we successfully obtain a set of CLF and CSMF measurements from observational data. We find that at low redshift the faint end slopes of CLFs and CSMFs below $10^{9}h^{-2}L_{\odot}$ (or $h^{-2}M_{\odot}$) evince a compelling concordance with the subhalo mass functions. After correcting the cosmic variance effect of our local Universe following arXiv:1809.00523, the faint end slopes of the LFs/SMFs turn out to be also in good agreement with the slope of the halo mass function.
Comment: 28 pages, 13 figures, Accepted for publication in ApJ
Comment: 28 pages, 13 figures, Accepted for publication in ApJ