Exploiting the data of the Grism Lens-Amplified Survey from Space (GLASS), we
characterize the spatial distribution of star formation in 76 galaxies in 10
clusters at 0.3< z <0.7. In a companion paper we contrast the properties of
field and cluster galaxies, whereas here we correlate the properties of Halpha
emitters to a number of tracers of the cluster environment to investigate its
role in driving galaxy transformations. Halpha emitters are found in the
clusters out to 0.5 virial radii, the maximum radius covered by GLASS. The peak
of the Halpha emission is offset with respect to the peak of the UV-continuum.
We decompose this offsets into a radial and 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, i.e. the
Halpha emission offset correlates with galaxy velocity and ram pressure
stripping signatures. Our clusters span a wide range of morphologies. Trends
between Halpha emitters 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 Halpha 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.
Description
[1610.04615] The Grism lens-amplified survey from space (GLASS). VIII. The influence of the cluster properties on Halpha emitter galaxies at 0.3<z<0.7
%0 Generic
%1 vulcani2016grism
%A Vulcani, Benedetta
%A Treu, Tommaso
%A Nipoti, Carlo
%A Schmidt, Kasper B.
%A Dressler, Alan
%A Morshita, Takahiro
%A Poggianti, Bianca M.
%A Malkan, Matthew
%A Hoag, Austin
%A Bradač, Marusa
%A Abramson, Louis
%A Trenti, Michele
%A Pentericci, Laura
%A von der Linden, Anja
%A Morris, Glenn
%A Wang, Xin
%D 2016
%K cluster emission environment line pressure ram
%T The Grism lens-amplified survey from space (GLASS). VIII. The influence
of the cluster properties on Halpha emitter galaxies at 0.3<z<0.7
%U http://arxiv.org/abs/1610.04615
%X Exploiting the data of the Grism Lens-Amplified Survey from Space (GLASS), we
characterize the spatial distribution of star formation in 76 galaxies in 10
clusters at 0.3< z <0.7. In a companion paper we contrast the properties of
field and cluster galaxies, whereas here we correlate the properties of Halpha
emitters to a number of tracers of the cluster environment to investigate its
role in driving galaxy transformations. Halpha emitters are found in the
clusters out to 0.5 virial radii, the maximum radius covered by GLASS. The peak
of the Halpha emission is offset with respect to the peak of the UV-continuum.
We decompose this offsets into a radial and 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, i.e. the
Halpha emission offset correlates with galaxy velocity and ram pressure
stripping signatures. Our clusters span a wide range of morphologies. Trends
between Halpha emitters 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 Halpha 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.
@misc{vulcani2016grism,
abstract = {Exploiting the data of the Grism Lens-Amplified Survey from Space (GLASS), we
characterize the spatial distribution of star formation in 76 galaxies in 10
clusters at 0.3< z <0.7. In a companion paper we contrast the properties of
field and cluster galaxies, whereas here we correlate the properties of Halpha
emitters to a number of tracers of the cluster environment to investigate its
role in driving galaxy transformations. Halpha emitters are found in the
clusters out to 0.5 virial radii, the maximum radius covered by GLASS. The peak
of the Halpha emission is offset with respect to the peak of the UV-continuum.
We decompose this offsets into a radial and 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, i.e. the
Halpha emission offset correlates with galaxy velocity and ram pressure
stripping signatures. Our clusters span a wide range of morphologies. Trends
between Halpha emitters 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 Halpha 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.},
added-at = {2016-10-18T09:22:02.000+0200},
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 von der Linden, Anja and Morris, Glenn and Wang, Xin},
biburl = {https://www.bibsonomy.org/bibtex/2e36f7332a78888c805d3ca8ba8c59568/miki},
description = {[1610.04615] The Grism lens-amplified survey from space (GLASS). VIII. The influence of the cluster properties on Halpha emitter galaxies at 0.3<z<0.7},
interhash = {08c6e8b2b06879fc78c7a18858a53fcc},
intrahash = {e36f7332a78888c805d3ca8ba8c59568},
keywords = {cluster emission environment line pressure ram},
note = {cite arxiv:1610.04615Comment: submitted to ApJ (17 pages, 10 figures)},
timestamp = {2016-10-18T09:22:02.000+0200},
title = {The Grism lens-amplified survey from space (GLASS). VIII. The influence
of the cluster properties on Halpha emitter galaxies at 0.3<z<0.7},
url = {http://arxiv.org/abs/1610.04615},
year = 2016
}