Measuring the conditional luminosity and stellar mass functions of galaxies by combining the DESI LS DR9, SV3 and Y1 data
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...
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Format | Journal Article |
Language | English |
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28.12.2023
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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. |
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AbstractList | 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. |
Author | Zheng, Yunliang Zou, Hu Ahlen, Steven Poppett, Claire Gu, Yizhou Claybaugh, Todd Meisner, Aaron Wang, Yirong Xu, Haojie Wang, Yaru Rezaie, Mehdi Zhou, Zhimin Lange, Johannes Ulf Weaver, Benjamin Alan Manera, Marc He, Min Cole, Shaun Honscheid, Klaus Dey, Biprateep Schubnell, Michael Tarlé, Gregory Brooks, David Behroozi, Peter Nie, Jundan Katsianis, Antonios Han, Jiaxin Rossi, Graziano Miquel, Ramon Kisner, Theodore Wang, Yuyu Hahn, ChangHoon Moustakas, John Tan, Zhenlin Hong, Wensheng Lambert, Andrew de la Macorra, Axel Sanchez, Eusebio Kehoe, Robert Aguilar, Jessica Nicole Xu, Xiaoju Doel, Peter Yang, Xiaohu Li, Qingyang Wang, Jiaqi Forero-Romero, Jaime E |
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BackLink | https://doi.org/10.48550/arXiv.2312.17459$$DView paper in arXiv |
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Snippet | In this investigation, we leverage the combination of Dark Energy
Spectroscopic Instrument Legacy imaging Surveys Data Release 9 (DESI LS DR9),
Survey... |
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Title | Measuring the conditional luminosity and stellar mass functions of galaxies by combining the DESI LS DR9, SV3 and Y1 data |
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