Star Formation Quenching in High-redshift Large-scale Structure: Post-starburst Galaxies in the Cl1604 Supercluster at $z\sim 0.9$

Abstract

The Cl1604 supercluster at $z\sim 0.9$ is one of the most extensively studied high redshift large scale structures, with more than 500 spectroscopically confirmed members. It consists of 8 clusters and groups, with members numbering from a dozen to nearly a hundred, providing a broad range of environments for investigating the large scale environmental effects on galaxy evolution. Here we examine the properties of 48 post-starburst galaxies in Cl1604, comparing them to other galaxy populations in the same supercluster. Incorporating photometry from ground-based optical and near-infrared imaging, along with $Spitzer$ mid-infrared observations, we derive stellar masses for all Cl1604 members. The colors and stellar masses of the K+A galaxies support the idea that they are progenitors of red sequence galaxies. Their morphologies, residual star-formation rates, and spatial distributions suggest galaxy mergers may be the principal mechanism producing post-starburst galaxies. Interaction between galaxies and the dense intra-cluster medium is also effective, but only in the cores of dynamically evolved clusters. The prevalence of post-starburst galaxies in clusters correlates with the dynamical state of the host cluster, as both galaxy mergers and the dense intra-cluster medium produce post-starburst galaxies. We also investigate the incompleteness and contamination of K+A samples selected by means of H$\delta$ and [OII] equivalent widths. K+A samples may be up to $\sim 50\%$ incomplete due to the presence of LINER/Seyferts and up to $\sim 30\%$ of K+A galaxies could have substantial star formation activity.

19 pages, 13 figures, accepted by ApJ

References in corpus (18)

• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
• Galaxy Merger Morphologies and Time-Scales from Simulations of Equal-Mass Gas-Rich Disc Mergers
• On the efficiency and reliability of cluster mass estimates based on member galaxies
• Post-starburst galaxies: more than just an interesting curiosity
• The environments of starburst and post-starburst galaxies at z=0.4-0.8
• The UV properties of E+A galaxies: constraints on feedback-driven quenching of star formation
• A Catalog of Local E+A(post-starburst) Galaxies selected from the Sloan Digital Sky Survey Data Release 5
• The VIMOS-VLT Deep Survey. Color bimodality and the mix of galaxy populations up to z~2
• The Observations of Redshift Evolution in Large Scale Environments (ORELSE) Survey : I. The Survey Design and First Results on Cl 0023+0423 at z = 0.84 and RX J1821.6+6827 at z = 0.82
• The DEEP2 Galaxy Redshift Survey: Environments of Poststarburst Galaxies at z~0.1 and z~0.8
• The Complex Structure of the Cl 1604 Supercluster at z~0.9
• The spatial distribution of galaxies of different spectral types in the massive intermediate-redshift cluster MACSJ0717.5+3745
• Serendipitous Discovery of an Overdensity of Lyman-Alpha Emitters at z~4.8 in the Cl1604 Supercluster Field
• Chandra Observations of the Cl1604 Supercluster at z=0.9: Evidence for an Overdensity of Active Galactic Nuclei
• Abundance diagnosis of E+A (post-starburst) galaxies
• The Violent Youth of Bright and Massive Cluster Galaxies and their Maturation over 7 Billion Years
• The Fundamental Planes of E+A galaxies and GALEX UV-excess early-type galaxies: Revealing their intimate connection

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• Persistence of the Color-Density Relation and Efficient Environmental Quenching to $z\sim 1.4$
• The ALPINE-ALMA [CII] survey: The contribution of major mergers to the galaxy mass assembly at z~5
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• Conditional Quenching: A detailed look at the SFR-Density Relation at z ~ 0.9 from ORELSE
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• Spatially resolved signature of quenching in star-forming galaxies
• The dynamic stage of clusters and its influence on the stellar populations of galaxies
• The evolution of galaxy scaling relations in clusters at 0.5<z<1.5
• Searching for local counterparts of high-redshift post-starburst galaxies in integral field unit spectroscopic surveys of nearby galaxies
• Gas properties as a function of environment in the proto-supercluster Hyperion at z ~ 2.45
• Environmental impact on star-forming galaxies in a $z\sim 0.9$ cluster during course of galaxy accretion