Environmental Quenching and Galactic Conformity in the Galaxy Cross-Correlation Signal

Abstract

It has long been known that environment has a large effect on star formation in galaxies. There are several known plausible mechanisms to remove the cool gas needed for star formation, such as strangulation, harassment and ram-pressure stripping.It is unclear which process is dominant, and over what range of stellar mass. In this paper, we find evidence for suppression of the cross-correlation function between massive galaxies and less massive star-forming galaxies, giving a measure of how less likely a galaxy is to be star-forming in the vicinity of a more massive galaxy. We develop a formalism for modelling environmental quenching mechanisms within the Halo Occupation Distribution scheme. We find that at $z\sim 2$ environment is not a significant factor in determining quenching of star-forming galaxies, and that galaxies are quenched with similar probabilities when they are satellites in sub-group environments, as they are globally. However, by $z\sim 0.5$ galaxies are much less likely to be star forming when in a high density (group or low-mass cluster) environment than when not. This increased probability of being quenched does not appear to have significant radial dependence within the halo at lower redshifts, supportive of the quenching being caused by the halting of fresh inflows of pristine gas, as opposed to by tidal stripping. Furthermore, by separating the massive sample into passive and star-forming, we see that this effect is further enhanced when the central galaxy is passive, a manifestation of galactic conformity.

23 pages, 11 figures, accepted MNRAS 17th August 2017

References in corpus (28)

• Cosmic Star Formation History
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• The Evolution of Galaxy Structure over Cosmic Time
• Measuring primordial non-gaussianity without cosmic variance
• Dependence of Galaxy Quenching on Halo Mass and Distance from its Centre
• Effects of Local Environment and Stellar Mass on Galaxy Quenching out to z~3
• Dark matter halo properties of GAMA galaxy groups from 100 square degrees of KiDS weak lensing data
• The galaxy-halo connection from a joint lensing, clustering and abundance analysis in the CFHTLenS/VIPERS field
• A Comparative Study of Density Field Estimation for Galaxies: New Insights into the Evolution of Galaxies with Environment in COSMOS out to z~3
• Galaxy Zoo: Evidence for Diverse Star Formation Histories through the Green Valley
• The influence of the environmental history on quenching star formation in a $\Lambda$CDM universe
• Hot gas in massive halos drives both mass quenching and environment quenching
• Galaxy environment in the 3D-HST fields. Witnessing the onset of satellite quenching at z ~ 1-2
• Cosmic Web of Galaxies in the COSMOS Field: Public Catalog and Different Quenching for Centrals and Satellites
• Overconsumption, outflows and the quenching of satellite galaxies
• Quenching of Star Formation in SDSS Groups: Centrals, Satellites, and Galactic Conformity
• Galaxy Colour, Morphology, and Environment in the Sloan Digital Sky Survey
• Probing the galaxy-halo connection in UltraVISTA to $z\sim 2$
• Radio-Quiet Quasars in the VIDEO Survey: Evidence for AGN-powered radio emission at S_1.4GHz < 1 mJy
• Halo Histories vs. Galaxy Properties at z=0 II: Large-Scale Galactic Conformity
• PRIMUS: One- and Two-Halo Galactic Conformity at $0.2<z<1$
• Evolution in the bias of faint radio sources to z ~ 2.2
• A New Model for Dark Matter Halos Hosting Quasars
• Analytical halo model of galactic conformity
• On the Reversal of SFR-Density Relation at z=1: Insights from Simulations
• Dark Matter Halo Mass Profiles
• A group-galaxy cross-correlation function analysis in zCOSMOS
• HELP: star formation as function of galaxy environmentwith Herschel

Cited by in corpus (23)

• The MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) Survey
• Horizon-AGN virtual observatory - 1. SED-fitting performance and forecasts for future imaging surveys
• The clustering and bias of radio-selected AGN and star-forming galaxies in the COSMOS field
• Halo Histories vs. Galaxy Properties at z=0 II: Large-Scale Galactic Conformity
• A New Method to Quantify Environment and Model Ram-Pressure Stripping in N-Body Simulations
• An environmental dependence of the physical and structural properties in the Hydra Cluster galaxies
• Evidence of Environmental Quenching at Redshift z ~ 2
• The dependence of galaxy clustering on tidal environment in the Sloan Digital Sky Survey
• One- and Two-point Source Statistics from the LOFAR Two-metre Sky Survey First Data Release
• Active galactic nuclei winds as the origin of the H${}_2$ emission excess in nearby galaxies
• Quenching or Bursting: the Role of Stellar Mass, Environment, and Specific Star Formation Rate to $z$ $\sim$ 1
• The environment and host haloes of the brightest z~6 Lyman-break galaxies
• Mufasa:The strength and evolution of galaxy conformity in various tracers
• Interrelation of the environment of Ly$\alpha$ emitters and massive galaxies at $2<z<4.5$
• Morphology & Environment's Role on the Star Formation Rate -- Stellar Mass Relation in COSMOS from 0 < z < 3.5
• Tracing the galaxy-halo connection with galaxy clustering in COSMOS-Web from z = 0.1 to z ~ 12
• A systematic search for galaxy protocluster cores at the transition epoch of their star formation activity
• Environment from cross-correlations: connecting hot gas and the quenching of galaxies
• Comparing Galaxy Clustering in Horizon-AGN Simulated Lightcone Mocks and VIDEO Observations
• J-PLUS: the impact of bars on quenching time-scales in nearby green valley disc galaxies
• Test of Cosmic Web-feeding Model for Star Formation in Galaxy Clusters in the COSMOS Field
• The role of gas stripping in the quenching of satellite galaxies using SHARK v2.0
• Angular correlation functions of bright Lyman-break galaxies at $3\lesssim \mathbf{z}\lesssim 5$