Photometric Objects around Cosmic Webs (PAC) Delineated in a Spectroscopic Survey. I. Methods

Abstract

We provide a method for estimating the projected density distribution ${\bar{n}}_2{w}_p(r_p)$ of photometric objects around spectroscopic objects in a redshift survey. This quantity describes the distribution of Photometric sources with certain physical properties (e.g. luminosity, mass, color etc) Around Cosmic webs (PAC) traced by the spectroscopic objects. The method can make full use of current and future deep and wide photometric surveys to explore the formation of galaxies up to medium redshift ($z_s<2$), with the aid of cosmological redshift surveys that sample only a fairly limited species of objects (e.g. Emission Line Galaxies). As an example, we apply the PAC method to the CMASS spectroscopic and HSC-SSP PDR2 photometric samples to explore the distribution of galaxies for a wide range of stellar mass from $10^{9.0}{\mathrm{M}}_{\odot }$ to $10^{12.0}{\mathrm{M}}_{\odot }$ around massive ones at $z_s\approx 0.6$. Using the abundance matching method, we model ${\bar{n}}_2{w}_p(r_p)$ in N-body simulation using MCMC sampling, and accurately measure the stellar-halo mass relation (SHMR) and stellar mass function (SMF) for the whole mass range. We can also measure the conditional stellar mass function (CSMF) of satellites for central galaxies of different mass. The PAC method has many potential applications for studying the evolution of galaxies.

15 pages, 7 figures, accepted for publication in ApJ

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Cited by in corpus (12)

• Construct the emission line galaxy-host halo connection through auto and cross correlations
• Photometric Objects Around Cosmic Webs (PAC) Delineated in a Spectroscopic Survey. III. Accurate Measurement of Galaxy Stellar Mass Function with the Aid of Cosmological Redshift Surveys
• Photometric Objects Around Cosmic Webs (PAC) Delineated in a Spectroscopic Survey. IV. High Precision Constraints on the Evolution of Stellar-Halo Mass Relation at Redshift $z<0.7$
• Mass Dependence of Galaxy-Halo Alignment in LOWZ and CMASS
• Photometric Objects Around Cosmic Webs (PAC) Delineated in a Spectroscopic survey. II. Morphology, Color and Size Dependences of the Stellar-halo Mass Relation for Massive Galaxies
• Dark against luminous matter around isolated central galaxies: a comparative study between modern surveys and Illustris-TNG
• PAC in DESI. I. Galaxy Stellar Mass Function into the $10^6{\mathrm{M}}_{\odot }$ Frontier
• Accurate Measurement of the Lensing Magnification by BOSS CMASS Galaxies and Its Implications for Cosmology and Dark Matter
• PAC.V. The Roles of Mass and Environment in the Quenching of Galaxies
• The Dependence of Dark Matter Halo Properties on the Morphology of Their Central Galaxies from Weak Lensing
• Photometric Objects Around Cosmic Webs (PAC). VI. High Satellite Fraction of Quasars
• Strong Conformity and Assembly Bias: Towards a Physical Understanding of the Galaxy-Halo Connection in SDSS Clusters