Cosmic Web of Galaxies in the COSMOS Field: Public Catalog and Different Quenching for Centrals and Satellites
Behnam Darvish, Bahram Mobasher, D. Christopher Martin, David Sobral,, Nick Z. Scoville, Andra Stroe, Shoubaneh Hemmati, and Jeyhan Kartaltepe

TL;DR
This study constructs a detailed cosmic web map in the COSMOS field up to redshift 1.2, revealing how galaxy star formation rates and quenching mechanisms vary with environment and galaxy type over cosmic time.
Contribution
It provides a public catalog of the cosmic web and analyzes how galaxy star formation and quenching depend on environment and redshift, highlighting differences between centrals and satellites.
Findings
Star formation rate declines from field to clusters at z<0.8, especially for satellites.
Satellite galaxies experience rapid quenching upon falling into clusters.
Centrals undergo slow environmental quenching at z<0.5 and faster at higher redshifts.
Abstract
We use a mass complete (log() 9.6) sample of galaxies with accurate photometric redshifts in the COSMOS field to construct the density field and the cosmic web to =1.2. The comic web extraction relies on the density field Hessian matrix and breaks the density field into clusters, filaments and the field. We provide the density field and cosmic web measures to the community. We show that at 0.8, the median star-formation rate (SFR) in the cosmic web gradually declines from the field to clusters and this decline is especially sharp for satellites ( 1 dex vs. 0.5 dex for centrals). However, at 0.8, the trend flattens out for the overall galaxy population and satellites. For star-forming galaxies only, the median SFR is constant at 0.5 but declines by 0.3-0.4 dex from the field to clusters for…
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