A dataset provided by the European Space Agency

Name OT1_rgobat_1
Title Unveiling the nature of strong galaxy activity in an X-ray detected galaxy cluster at z=2.07


DOI 10.5270/esa-t5qc5rr
Author gobat, r.
Description We have recently discovered the most distant X-ray luminous galaxy cluster known to date, a z=2.07 strong overdensity of red passively evolving ellipticals with extended X-ray emission seen by XMM-Newton. Several cluster members are detected by MIPS at 24 micron with fluxes above 100 microJy, implying high luminosities in the mid-IR rest frame. If due to star formation activity this would correspond to ULIRG-like luminosities, and would imply a very high degree of forming activity in the cluster core. However, the MIPS detected galaxies have elliptical like morphologies and SEDs, suggesting in turn that the mid-IR emission is due to a huge amount of heavily obscured AGN activity. We propose deep imaging with PACS and SPIRE in the cluster that will clarify the AGN or SF nature of the activity in the cluster. Our results will have important implications on the understanding of the early phases of cluster galaxy assembly. This project will push the study of galaxy activity in established clusters to the highest possible redshifts.
Publication Revealing dust-obscured star formation in CLJ1449+0856, a cluster at z = 2 . Smith C. M. A. et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2019MNRAS.486.4304S ,
A flat trend of star formation rate with X-ray luminosity of galaxies hosting AGN in the SCUBA-2 Cosmology Legacy Survey . Ramasawmy Joanna et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2019MNRAS.486.4320R ,
Instrument PACS_PacsPhoto_largeScan
Temporal Coverage 2011-07-19T17:16:16Z/2011-07-20T10:52:13Z
Version SPG v14.2.0
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 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2012-01-20T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-01-20T00:00:00Z, OT1_rgobat_1, SPG v14.2.0. https://doi.org/10.5270/esa-t5qc5rr