Dusty, star-forming galaxies have a critical role in the formation and
evolution of massive galaxies in the Universe. Using deep far-infrared imaging
in the range 100-500um obtained with the Herschel telescope, we investigate the
dust-obscured star formation in the galaxy cluster XDCP J0044.0-2033 at z=1.58,
the most massive cluster at z >1.5, with a measured mass M200= 4.7x10$^14$
Msun. We perform an analysis of the spectral energy distributions (SEDs) of 12
cluster members (5 spectroscopically confirmed) detected with >3$\sigma$
significance in the PACS maps, all ULIRGs. The individual star formation rates
(SFRs) lie in the range 155-824 Ms/yr, with dust temperatures of 24$\pm$35 K.
We measure a strikingly high amount of star formation (SF) in the cluster core,
SFR (< 250 kpc) > 1875$\pm$158 Ms/yr, 4x higher than the amount of star
formation in the cluster outskirts. This scenario is unprecedented in a galaxy
cluster, showing for the first time a reversal of the SF-density relation at
z~1.6 in a massive cluster.
Beschreibung
[1412.5188] The reversal of the SF-density relation in a massive, X-ray selected galaxy cluster at z=1.58: results from Herschel
%0 Generic
%1 santos2014reversal
%A Santos, Joana S.
%A Altieri, . Bruno
%A Valtchanov, Ivan
%A Nastasi, Alessandro
%A Böhringer, Hans
%A Cresci, Giovanni
%A Elbaz, David
%A Fassbender, Rene
%A Rosati, Piero
%A Tozzi, Paolo
%A Verdugo, Miguel
%D 2014
%K cluster density high-z sfr
%T The reversal of the SF-density relation in a massive, X-ray selected
galaxy cluster at z=1.58: results from Herschel
%U http://arxiv.org/abs/1412.5188
%X Dusty, star-forming galaxies have a critical role in the formation and
evolution of massive galaxies in the Universe. Using deep far-infrared imaging
in the range 100-500um obtained with the Herschel telescope, we investigate the
dust-obscured star formation in the galaxy cluster XDCP J0044.0-2033 at z=1.58,
the most massive cluster at z >1.5, with a measured mass M200= 4.7x10$^14$
Msun. We perform an analysis of the spectral energy distributions (SEDs) of 12
cluster members (5 spectroscopically confirmed) detected with >3$\sigma$
significance in the PACS maps, all ULIRGs. The individual star formation rates
(SFRs) lie in the range 155-824 Ms/yr, with dust temperatures of 24$\pm$35 K.
We measure a strikingly high amount of star formation (SF) in the cluster core,
SFR (< 250 kpc) > 1875$\pm$158 Ms/yr, 4x higher than the amount of star
formation in the cluster outskirts. This scenario is unprecedented in a galaxy
cluster, showing for the first time a reversal of the SF-density relation at
z~1.6 in a massive cluster.
@misc{santos2014reversal,
abstract = {Dusty, star-forming galaxies have a critical role in the formation and
evolution of massive galaxies in the Universe. Using deep far-infrared imaging
in the range 100-500um obtained with the Herschel telescope, we investigate the
dust-obscured star formation in the galaxy cluster XDCP J0044.0-2033 at z=1.58,
the most massive cluster at z >1.5, with a measured mass M200= 4.7x10$^{14}$
Msun. We perform an analysis of the spectral energy distributions (SEDs) of 12
cluster members (5 spectroscopically confirmed) detected with >3$\sigma$
significance in the PACS maps, all ULIRGs. The individual star formation rates
(SFRs) lie in the range 155-824 Ms/yr, with dust temperatures of 24$\pm$35 K.
We measure a strikingly high amount of star formation (SF) in the cluster core,
SFR (< 250 kpc) > 1875$\pm$158 Ms/yr, 4x higher than the amount of star
formation in the cluster outskirts. This scenario is unprecedented in a galaxy
cluster, showing for the first time a reversal of the SF-density relation at
z~1.6 in a massive cluster.},
added-at = {2014-12-18T09:03:56.000+0100},
author = {Santos, Joana S. and Altieri, . Bruno and Valtchanov, Ivan and Nastasi, Alessandro and Böhringer, Hans and Cresci, Giovanni and Elbaz, David and Fassbender, Rene and Rosati, Piero and Tozzi, Paolo and Verdugo, Miguel},
biburl = {https://www.bibsonomy.org/bibtex/2f3303e85fd99fc4236542eb8f2c165bb/miki},
description = {[1412.5188] The reversal of the SF-density relation in a massive, X-ray selected galaxy cluster at z=1.58: results from Herschel},
interhash = {8f7946556123e7773f703ecf2d39fc30},
intrahash = {f3303e85fd99fc4236542eb8f2c165bb},
keywords = {cluster density high-z sfr},
note = {cite arxiv:1412.5188Comment: Letter accepted for publication in MNRAS, ESA Press Release on 18 December 2014},
timestamp = {2014-12-18T09:03:56.000+0100},
title = {The reversal of the SF-density relation in a massive, X-ray selected
galaxy cluster at z=1.58: results from Herschel},
url = {http://arxiv.org/abs/1412.5188},
year = 2014
}