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 altieri, b.
Description Massive clusters of galaxies have been found to date from as early as3-4 billion years after the Big Bang. Cosmological simulations using thecurrent cold dark matter model predict that these systems should descendfrom .proto-clusters. - early overdensities of massive galaxies thatmerge hierarchically to form a cluster. These protocluster regionsthemselves are built up hierarchically and so are expected to containextremely massive galaxies, progenitors of the quiescent behemothsobserved in cores of the present day massive galaxy clusters.Observational evidence for this picture, however, is sparse becausehigh-redshift proto-clusters are rare and difficult to observe. Here wepropose to probe with Herschel SPIRE the very beginning of the cluster andmassive 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 highredshift, to compare the properties of the proto-cluster galaxies withthose of field galaxies at similar redshift. Determining whether clustergalaxies differ from field galaxies when the proto-cluster was stillforming, tells us whether any of the difference observed today is drivenby 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
    Keywords Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE
    Publisher And Registrant European Space Agency
    Credit Guidelines European Space Agency, altieri et al., 2013, 'Star formation in proto-clusters', SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-ncafgao