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Title: The rise and fall of star formation in z ~ 0.2 merging galaxy clusters

Abstract

CIZA J2242.8+5301 (‘Sausage’) and 1RXS J0603.3+4213 (‘Toothbrush’) are two low-redshift (z ~ 0.2), massive (~2 × 1015 M), post-core passage merging clusters, which host-shock waves traced by diffuse radio emission. To study their star formation properties, we uniformly survey the ‘Sausage’ and ‘Toothbrush’ clusters in broad- and narrow-band filters and select a sample of 201 and 463 line emitters, down to a rest-frame equivalent width (13 Å). Here, we robustly separate between Hα and higher redshift emitters using a combination of optical multiband (B, g, V, r, i, z) and spectroscopic data. We build Hα luminosity functions for the entire cluster region, near the shock fronts, and away from the shock fronts and find striking differences between the two clusters. In the dynamically younger, 1 Gyr old ‘Sausage’ cluster we find numerous (59) Hα emitters above a star formation rate (SFR) of 0.17 M yr-1 surprisingly located in close proximity to the shock fronts, embedded in very hot intracluster medium plasma. The SFR density for the cluster population is at least at the level of typical galaxies at z ~ 2. Down to the same SFR, the possibly dynamically more evolved ‘Toothbrush’ cluster has only nine Hα galaxies. The clustermore » Hα galaxies fall on the SFR–stellar mass relation z ~ 0.2 for the field. However, the ‘Sausage’ cluster has an Hα emitter density >20 times that of blank fields. If the shock passes through gas-rich cluster galaxies, the compressed gas could collapse into dense clouds and excite star formation for a few 100 Myr. Finally, this process ultimately leads to a rapid consumption of the molecular gas, accelerating the transformation of gas-rich field spirals into cluster S0s or ellipticals.« less

Authors:
 [1];  [2];  [3];  [4];  [1];  [4];  [5];  [6];  [1]
  1. Leiden University (the Netherlands). Leiden Observatory
  2. Leiden University (the Netherlands). Leiden Observatory ;Instituto de Astroisica e Ciencias do Espaco, Universidade de Lisboa, Observatorio Astronomico de Lisboa, Tapada da Ajuda (Portugal); Centro de Astronomia e Astrofisica da Universidade de Lisboa, Observatorio Astronomico de Lisboa, Tapada da Ajuda (Portugal)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Univ. of California, Davis, CA (United States). Department of Physics
  5. Harvard-Smithsonian Center for Astrophysics (CfA - SAO), Cambridge, MA (United States)
  6. Universitat Hamburg (Germany). Hamburger Sternwarte
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1406454
Report Number(s):
LLNL-JRNL-661314
Journal ID: ISSN 0035-8711
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 450; Journal Issue: 1; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; shock waves; galaxies: clusters: individual: CIZA J2242.8+5301; galaxies: clusters: individual: 1RXS J0603.3+4213; galaxies: evolution; cosmology: observations; large-scale structure of Universe

Citation Formats

Stroe, Andra, Sobral, David, Dawson, William, Jee, M. James, Hoekstra, Henk, Wittman, David, van Weeren, Reinout J., Brüggen, Marcus, and Röttgering, Huub J. A. The rise and fall of star formation in z ~ 0.2 merging galaxy clusters. United States: N. p., 2015. Web. doi:10.1093/mnras/stu2519.
Stroe, Andra, Sobral, David, Dawson, William, Jee, M. James, Hoekstra, Henk, Wittman, David, van Weeren, Reinout J., Brüggen, Marcus, & Röttgering, Huub J. A. The rise and fall of star formation in z ~ 0.2 merging galaxy clusters. United States. https://doi.org/10.1093/mnras/stu2519
Stroe, Andra, Sobral, David, Dawson, William, Jee, M. James, Hoekstra, Henk, Wittman, David, van Weeren, Reinout J., Brüggen, Marcus, and Röttgering, Huub J. A. Mon . "The rise and fall of star formation in z ~ 0.2 merging galaxy clusters". United States. https://doi.org/10.1093/mnras/stu2519. https://www.osti.gov/servlets/purl/1406454.
@article{osti_1406454,
title = {The rise and fall of star formation in z ~ 0.2 merging galaxy clusters},
author = {Stroe, Andra and Sobral, David and Dawson, William and Jee, M. James and Hoekstra, Henk and Wittman, David and van Weeren, Reinout J. and Brüggen, Marcus and Röttgering, Huub J. A.},
abstractNote = {CIZA J2242.8+5301 (‘Sausage’) and 1RXS J0603.3+4213 (‘Toothbrush’) are two low-redshift (z ~ 0.2), massive (~2 × 1015 M⊙), post-core passage merging clusters, which host-shock waves traced by diffuse radio emission. To study their star formation properties, we uniformly survey the ‘Sausage’ and ‘Toothbrush’ clusters in broad- and narrow-band filters and select a sample of 201 and 463 line emitters, down to a rest-frame equivalent width (13 Å). Here, we robustly separate between Hα and higher redshift emitters using a combination of optical multiband (B, g, V, r, i, z) and spectroscopic data. We build Hα luminosity functions for the entire cluster region, near the shock fronts, and away from the shock fronts and find striking differences between the two clusters. In the dynamically younger, 1 Gyr old ‘Sausage’ cluster we find numerous (59) Hα emitters above a star formation rate (SFR) of 0.17 M⊙ yr-1 surprisingly located in close proximity to the shock fronts, embedded in very hot intracluster medium plasma. The SFR density for the cluster population is at least at the level of typical galaxies at z ~ 2. Down to the same SFR, the possibly dynamically more evolved ‘Toothbrush’ cluster has only nine Hα galaxies. The cluster Hα galaxies fall on the SFR–stellar mass relation z ~ 0.2 for the field. However, the ‘Sausage’ cluster has an Hα emitter density >20 times that of blank fields. If the shock passes through gas-rich cluster galaxies, the compressed gas could collapse into dense clouds and excite star formation for a few 100 Myr. Finally, this process ultimately leads to a rapid consumption of the molecular gas, accelerating the transformation of gas-rich field spirals into cluster S0s or ellipticals.},
doi = {10.1093/mnras/stu2519},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 1,
volume = 450,
place = {United States},
year = {Mon Apr 20 00:00:00 EDT 2015},
month = {Mon Apr 20 00:00:00 EDT 2015}
}

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THE GRISM LENS-AMPLIFIED SURVEY FROM SPACE (GLASS). VII. THE DIVERSITY OF THE DISTRIBUTION OF STAR FORMATION IN CLUSTER AND FIELD GALAXIES AT 0.3 ≤ z ≤ 0.7
journal, December 2016


Cosmic Web of Galaxies in the COSMOS Field: Public Catalog and Different Quenching for Centrals and Satellites
journal, February 2017

  • Darvish, Behnam; Mobasher, Bahram; Martin, D. Christopher
  • The Astrophysical Journal, Vol. 837, Issue 1
  • DOI: 10.3847/1538-4357/837/1/16

Quenching or Bursting: The Role of Stellar Mass, Environment, and Specific Star Formation Rate to $z\sim 1$
journal, February 2018

  • Darvish, Behnam; Martin, Christopher; Gonçalves, Thiago S.
  • The Astrophysical Journal, Vol. 853, Issue 2
  • DOI: 10.3847/1538-4357/aaa5a4

Merging Cluster Collaboration: A Panchromatic Atlas of Radio Relic Mergers
journal, September 2019

  • Golovich, N.; Dawson, W. A.; Wittman, D. M.
  • The Astrophysical Journal, Vol. 882, Issue 1
  • DOI: 10.3847/1538-4357/ab2f90

Large Molecular Gas Reservoirs in Star-forming Cluster Galaxies
journal, September 2019

  • Cairns, Joseph; Stroe, Andra; Breuck, Carlos De
  • The Astrophysical Journal, Vol. 882, Issue 2
  • DOI: 10.3847/1538-4357/ab3392

Jellyfish: Ram Pressure Stripping As a Diagnostic Tool in Studies of Cluster Collisions
journal, September 2019


Chandra Observations of the Spectacular A3411–12 Merger Event
journal, December 2019

  • Andrade-Santos, Felipe; van Weeren, Reinout J.; Di Gennaro, Gabriella
  • The Astrophysical Journal, Vol. 887, Issue 1
  • DOI: 10.3847/1538-4357/ab4ce5

Cosmic Web of Galaxies in the COSMOS Field: Public Catalog and Different Quenching for Centrals and Satellites
text, January 2016


Deep LOFAR observations of the merging galaxy cluster CIZA J2242.8+5301
text, January 2017


Galaxy evolution in merging clusters: The passive core of the "Train Wreck" cluster of galaxies, A520
text, January 2017


Quenching or Bursting: the Role of Stellar Mass, Environment, and Specific Star Formation Rate to $z$ $\sim$ 1
text, January 2018


VIS3COS: I. survey overview and the role of environment and stellar mass on star formation
text, January 2018


Merging Cluster Collaboration: A Panchromatic Atlas of Radio Relic Mergers
text, January 2018


Morphology rather than environment drives the SFR-Mass relation in the local universe
text, January 2018


Halo Concentration, Galaxy Red Fraction, and Gas Properties of Optically-defined Merging Clusters
text, January 2018


Large Molecular Gas Reservoirs in Star Forming Cluster Galaxies
text, January 2019