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Title: The Grism Lens-Amplified Survey from Space (GLASS). VIII. The Influence of the Cluster Properties on H α Emitter Galaxies at 0.3 < z < 0.7

In exploiting the data of the Grism Lens-Amplified Survey from Space (GLASS), we characterize the spatial distribution of star formation in 76 highly active star-forming galaxies in 10 clusters at $$0.3\lt z\lt 0.7$$. All of these galaxies are likely restricted to first infall. We contrast the properties of field and cluster galaxies, in a companion paper, whereas here we correlate the properties of Hα emitters to a number of tracers of the cluster environment to investigate its role in driving galaxy transformations. Hα emitters are found in the clusters out to 0.5 virial radii, the maximum radius covered by GLASS. The peak of the Hα emission is offset with respect to the peak of the UV continuum. We also decompose these offsets into a radial and a tangential component. The radial component points away from the cluster center in 60% of the cases, with 95% confidence. The decompositions agree with cosmological simulations; that is, the Hα emission offset correlates with galaxy velocity and ram-pressure stripping signatures. Furthermore, trends between Hα emitter properties and surface mass density distributions and X-ray emissions emerge only for unrelaxed clusters. The lack of strong correlations with the global environment does not allow us to identify a unique environmental effect originating from the cluster center. In contrast, correlations between Hα morphology and local number density emerge. We conclude that local effects, uncorrelated to the cluster-centric radius, play a more important role in shaping galaxy properties.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [3] ;  [4] ; ORCiD logo [5] ;  [6] ; ORCiD logo [7] ; ORCiD logo [2] ; ORCiD logo [8] ;  [8] ; ORCiD logo [2] ; ORCiD logo [1] ;  [7] ;  [9] ;  [10] ;  [2]
  1. Univ. of Melbourne (Australia). School of Physics
  2. Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
  3. Bologna Univ. (Italy). Dept. of Physics and Astronomy
  4. Leibniz Inst. for Astrophysics, Potsdam (Germany)
  5. Observatories of the Carnegie Inst. for Science, Pasadena, CA (United States)
  6. Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy; Tohoku Univ., Sendai (Japan). Astronomical Inst. and Inst. for International Advanced Research and Education
  7. National Inst. of Astrophysics (INAF), Rome (Italy). Astronomical Observatory of Rome
  8. Univ. of California, Davis, CA (United States). Dept. of Physics
  9. Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
  10. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology; SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 837; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; galaxies: clusters: general; galaxies: evolution; galaxies: formation; galaxies: general; galaxies: star formation
OSTI Identifier:
1352632

Vulcani, Benedetta, Treu, Tommaso, Nipoti, Carlo, Schmidt, Kasper B., Dressler, Alan, Morshita, Takahiro, Poggianti, Bianca M., Malkan, Matthew, Hoag, Austin, Bradač, Marusa, Abramson, Louis, Trenti, Michele, Pentericci, Laura, Linden, Anja von der, Morris, Glenn, and Wang, Xin. The Grism Lens-Amplified Survey from Space (GLASS). VIII. The Influence of the Cluster Properties on H α Emitter Galaxies at 0.3 < z < 0.7. United States: N. p., Web. doi:10.3847/1538-4357/aa618b.
Vulcani, Benedetta, Treu, Tommaso, Nipoti, Carlo, Schmidt, Kasper B., Dressler, Alan, Morshita, Takahiro, Poggianti, Bianca M., Malkan, Matthew, Hoag, Austin, Bradač, Marusa, Abramson, Louis, Trenti, Michele, Pentericci, Laura, Linden, Anja von der, Morris, Glenn, & Wang, Xin. The Grism Lens-Amplified Survey from Space (GLASS). VIII. The Influence of the Cluster Properties on H α Emitter Galaxies at 0.3 < z < 0.7. United States. doi:10.3847/1538-4357/aa618b.
Vulcani, Benedetta, Treu, Tommaso, Nipoti, Carlo, Schmidt, Kasper B., Dressler, Alan, Morshita, Takahiro, Poggianti, Bianca M., Malkan, Matthew, Hoag, Austin, Bradač, Marusa, Abramson, Louis, Trenti, Michele, Pentericci, Laura, Linden, Anja von der, Morris, Glenn, and Wang, Xin. 2017. "The Grism Lens-Amplified Survey from Space (GLASS). VIII. The Influence of the Cluster Properties on H α Emitter Galaxies at 0.3 < z < 0.7". United States. doi:10.3847/1538-4357/aa618b. https://www.osti.gov/servlets/purl/1352632.
@article{osti_1352632,
title = {The Grism Lens-Amplified Survey from Space (GLASS). VIII. The Influence of the Cluster Properties on H α Emitter Galaxies at 0.3 < z < 0.7},
author = {Vulcani, Benedetta and Treu, Tommaso and Nipoti, Carlo and Schmidt, Kasper B. and Dressler, Alan and Morshita, Takahiro and Poggianti, Bianca M. and Malkan, Matthew and Hoag, Austin and Bradač, Marusa and Abramson, Louis and Trenti, Michele and Pentericci, Laura and Linden, Anja von der and Morris, Glenn and Wang, Xin},
abstractNote = {In exploiting the data of the Grism Lens-Amplified Survey from Space (GLASS), we characterize the spatial distribution of star formation in 76 highly active star-forming galaxies in 10 clusters at $0.3\lt z\lt 0.7$. All of these galaxies are likely restricted to first infall. We contrast the properties of field and cluster galaxies, in a companion paper, whereas here we correlate the properties of Hα emitters to a number of tracers of the cluster environment to investigate its role in driving galaxy transformations. Hα emitters are found in the clusters out to 0.5 virial radii, the maximum radius covered by GLASS. The peak of the Hα emission is offset with respect to the peak of the UV continuum. We also decompose these offsets into a radial and a tangential component. The radial component points away from the cluster center in 60% of the cases, with 95% confidence. The decompositions agree with cosmological simulations; that is, the Hα emission offset correlates with galaxy velocity and ram-pressure stripping signatures. Furthermore, trends between Hα emitter properties and surface mass density distributions and X-ray emissions emerge only for unrelaxed clusters. The lack of strong correlations with the global environment does not allow us to identify a unique environmental effect originating from the cluster center. In contrast, correlations between Hα morphology and local number density emerge. We conclude that local effects, uncorrelated to the cluster-centric radius, play a more important role in shaping galaxy properties.},
doi = {10.3847/1538-4357/aa618b},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 837,
place = {United States},
year = {2017},
month = {3}
}