A dataset provided by the European Space Agency

Name OT2_baltieri_5
Title Star formation in proto-clusters
URL

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DOI https://doi.org/10.5270/esa-ncafgao
Author European Space Agency
Description Massive clusters of galaxies have been found to date from as early as
3-4 billion years after the Big Bang. Cosmological simulations using the
current cold dark matter model predict that these systems should descend
from .proto-clusters. - early overdensities of massive galaxies that
merge hierarchically to form a cluster. These protocluster regions
themselves are built up hierarchically and so are expected to contain
extremely massive galaxies, progenitors of the quiescent behemoths
observed in cores of the present day massive galaxy clusters.
Observational evidence for this picture, however, is sparse because
high-redshift proto-clusters are rare and difficult to observe. Here we
propose to probe with Herschel SPIRE the very beginning of the cluster and
massive galaxies formation process by observing 5 proto-clusters at 3<z<4.
The aim of the project is to observe the entire Ultraluminous IR galaxy
(ULIRG) population, dominating the bulk of the star formation at such high
redshift, to compare the properties of the proto-cluster galaxies with
those of field galaxies at similar redshift. Determining whether cluster
galaxies differ from field galaxies when the proto-cluster was still
forming, tells us whether any of the difference observed today is driven
by nature as apposed to nurture.
Publication
Instrument SPIRE_SpirePhoto_large
Temporal Coverage 2012-02-29T23:47:23Z/2012-10-01T10:02:08Z
Version SPG v14.1.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/h®erschel/
Date Published 2013-04-01T09:53:19Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013, Star Formation In Proto-Clusters, SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-ncafgao