Measuring the Conditional Luminosity and Stellar Mass Functions of Galaxies by Combining the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys Data Release 9, Survey Validation 3, and Year 1 Data
Abstract In this investigation, we leverage the combination of the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys Data Release 9, Survey Validation 3, and Year 1 data sets to estimate the conditional luminosity functions and conditional stellar mass functions (CLFs and 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 the 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 ⊙ (or h −2 M ⊙ ) evince a compelling concordance with the subhalo mass functions. After correcting the cosmic variance effect of our local Universe following Chen et al., the faint-end slopes of the LFs/SMFs turn out to also be in good agreement with the slope of the halo mass function.
Authors
- Yizhou Gu (ORCID: https://orcid.org/0000-0003-3196-7938)
- Yun-Liang Zheng (ORCID: https://orcid.org/0000-0002-5632-9345)
- Andrew Lambert (ORCID: https://orcid.org/0009-0003-5658-2601)
- D. Brooks (ORCID: https://orcid.org/0000-0002-8458-5047)
- Peter Behroozi (ORCID: https://orcid.org/0000-0002-2517-6446)
- Michael S. Schubnell (ORCID: https://orcid.org/0000-0001-9504-2059)
- Graziano Rossi (ORCID: https://orcid.org/0000-0002-5102-5019)
- Antonios Katsianis (ORCID: https://orcid.org/0000-0003-0497-5692)
- Xiaohu Yang (ORCID: https://orcid.org/0000-0003-3997-4606)
- Gregory Tarlé (ORCID: https://orcid.org/0000-0003-1704-0781)
- Jiaxin Han (ORCID: https://orcid.org/0000-0002-8010-6715)
- Axel de la Macorra (ORCID: https://orcid.org/0000-0002-1769-1640)
- Yuyu Wang (ORCID: https://orcid.org/0000-0002-0245-8547)
- Jundan Nie (ORCID: https://orcid.org/0000-0001-6590-8122)
- Shaun Cole (ORCID: https://orcid.org/0000-0002-5954-7903)
- Marc Manera (ORCID: https://orcid.org/0000-0003-4962-8934)
- J. Aguilar (ORCID: https://orcid.org/0000-0003-0822-452X)
- Eusebio Sanchez (ORCID: https://orcid.org/0000-0002-9646-8198)
- ChangHoon Hahn (ORCID: https://orcid.org/0000-0003-1197-0902)
- K. Honscheid (ORCID: https://orcid.org/0000-0002-6550-2023)
- J. E. Forero-Romero (ORCID: https://orcid.org/0000-0002-2890-3725)
- Steven P. Ahlen (ORCID: https://orcid.org/0000-0001-6098-7247)
- Aaron Meisner (ORCID: https://orcid.org/0000-0002-1125-7384)
- R. Miquel (ORCID: https://orcid.org/0000-0002-6610-4836)
- Theodore S. Kisner (ORCID: https://orcid.org/0000-0003-3510-7134)
- Biprateep Dey (ORCID: https://orcid.org/0000-0002-5665-7912)
- Mehdi Rezaie (ORCID: https://orcid.org/0000-0001-5589-7116)
- R. Kehoe (ORCID: https://orcid.org/0000-0002-7101-697X)
- Haojie Xu (ORCID: https://orcid.org/0000-0003-1132-8258)
- John Moustakas (ORCID: https://orcid.org/0000-0002-2733-4559)
- Claire Poppett (ORCID: https://orcid.org/0000-0003-0512-5489)
- Zhimin Zhou
- Yirong Wang (ORCID: https://orcid.org/0000-0003-3203-3299)
- Min He (ORCID: https://orcid.org/0000-0001-6139-7660)
- Johannes Ulf Lange
- Hu Zou (ORCID: https://orcid.org/0000-0002-6684-3997)
- Yaru 雅茹 Wang 王
- Wensheng 文生 Hong 洪
- Jiaqi 佳琪 Wang 王
- Zhenlin 镇林 Tan 谭
- Qingyang 清洋 Li 李
- Xiaoju 笑菊 Xu 徐
- T. Claybaugh (ORCID: https://orcid.org/0000-0002-5024-6987)
- Benjamin A. Weaver
- P. Doel (ORCID: https://orcid.org/0000-0002-6397-4457)
Institutions
- Boston University (US)
- Institució Catalana de Recerca i Estudis Avançats (ES)
- Universidad Complutense de Madrid (ES)
- Universitat Autònoma de Barcelona (ES)
- University of Arizona (US)
- Lawrence Berkeley National Laboratory (US)
- Sun Yat-sen University (CN)
- Universidad de Los Andes (CO)
- University of Pittsburgh (US)
- Southern Methodist University (US)
- Shanghai Jiao Tong University (CN)
- University of California, Santa Cruz (US)
- Institute for High Energy Physics (ES)
- Kansas State University (US)
- Durham University (GB)
- Chinese Academy of Sciences (CN)
- Princeton University (US)
- University of Michigan (US)
- Shanghai Astronomical Observatory (CN)
- Sejong University (KR)
- Kavli Institute for Particle Astrophysics and Cosmology (US)
- Zhuhai People's Hospital (CN)
- Community Science and Data Center (US)
- NSF NOIRLab (US)
- National Astronomical Observatories (CN)
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (ES)
- University College London (GB)
- The Ohio State University (US)
- Universidad Nacional Autónoma de México (MX)
- Siena College (US)
- University of California, Berkeley (US)
- Stanford University (US)
Publication Details
- Journal
- The Astrophysical Journal
- Published
- 2024-08-01
- DOI
- https://doi.org/10.3847/1538-4357/ad5294
- Citations
- 9
- Primary Topic
- Galaxies: Formation, Evolution, Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 2.98
Funders
- National Science Foundation
- U.S. Department of Energy
- Gordon and Betty Moore Foundation
- Natural Science Foundation of Shanghai
- National Natural Science Foundation of China
- Consejo Nacional de Ciencia y Tecnología
- Ministerio de Ciencia e Innovación
- Shanghai Jiao Tong University
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives
- Higher Education Discipline Innovation Project
- Office of Science
- Science and Technology Facilities Council
- Fundamental Research Funds for the Central Universities
- Division of Astronomical Sciences
- Lawrence Berkeley National Laboratory