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Journal Articles Monthly Notices of the Royal Astronomical Society Year : 2024

The DESI One-Percent Survey: exploring a generalized SHAM for multiple tracers with the UNIT simulation

Jiaxi Yu
Cheng Zhao
Allyson Brodzeller
Ashley Ross
Yunchong Wang
Sihan Yuan
Hanyu Zhang
Rongpu Zhou
Jessica Nicole Aguilar
  • Function : Author
Steven Ahlen
Kyle Dawson
  • Function : Author
Alex de la Macorra
Kevin Fanning
Andreu Font-Ribera
Jaime Forero-Romero
Satya Gontcho A Gontcho
Robert Kehoe
  • Function : Author
Theodore Kisner
Anthony Kremin
Marc Manera
Paul Martini
Ramon Miquel
  • Function : Author
John Moustakas
Jundan Nie
Will Percival
Claire Poppett
  • Function : Author
Anand Raichoor
Graziano Rossi
  • Function : Author
Hee-Jong Seo
Gregory Tarlé
Zhimin Zhou
Hu Zou

Abstract

ABSTRACT We perform SubHalo Abundance Matching (SHAM) studies on UNIT simulations with {σ, Vceil, vsmear}-SHAM and {σ, Vceil, fsat}-SHAM. They are designed to reproduce the clustering on 5–30 $\, {\, h^{-1}\, {\rm Mpc}}$ of luminous red galaxies (LRGs), emission-line galaxies (ELGs), and quasi-stellar objects (QSOs) at 0.4 < z < 3.5 from DESI (Dark Energy Spectroscopic Instrument) One Percent Survey. Vceil is the incompleteness of the massive host (sub)haloes and is the key to the generalized SHAM. vsmear models the clustering effect of redshift uncertainties, providing measurements consistent with those from repeat observations. A free satellite fraction fsat is necessary to reproduce the clustering of ELGs. We find ELGs present a more complex galaxy–halo mass relation than LRGs reflected in their weak constraints on σ. LRGs, QSOs, and ELGs show increasing Vceil values, corresponding to the massive galaxy incompleteness of LRGs, the quenched star formation of ELGs and the quenched black hole accretion of QSOs. For LRGs, a Gaussian vsmear presents a better profile for subsamples at redshift bins than a Lorentzian profile used for other tracers. The impact of the statistical redshift uncertainty on ELG clustering is negligible. The best-fitting satellite fraction for DESI ELGs is around 4 per cent, lower than previous estimations for ELGs. The mean halo mass log10(〈Mvir〉) in ${{\, h^{-1}\, \mbox{M}_\odot }}{}$ for LRGs, ELGs, and QSOs are 13.16 ± 0.01, 11.90 ± 0.06, and 12.66 ± 0.45, respectively. Our generalized SHAM algorithms facilitate the production of multitracer galaxy mocks for cosmological tests.
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hal-04505677 , version 1 (16-03-2024)

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Jiaxi Yu, Cheng Zhao, Violeta Gonzalez-Perez, Chia-Hsun Chuang, Allyson Brodzeller, et al.. The DESI One-Percent Survey: exploring a generalized SHAM for multiple tracers with the UNIT simulation. Monthly Notices of the Royal Astronomical Society, 2024, 527 (3), pp.6950-6969. ⟨10.1093/mnras/stad3559⟩. ⟨hal-04505677⟩
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