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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Herschel multitiered extragalactic survey: Clusters of dusty galaxies uncovered by Herschel and Planck
Monthly Notices of the Royal Astronomical Society, Volume 439, No. 2, Year 2014
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Description
The potential for Planck to detect clusters of dusty, star-forming galaxies at z > 1 is tested by examining the Herschel-SPIRE images of Planck Early Release Compact Source Catalog sources lying in fields observed by the Herschel Multitiered Extragalactic Survey. Of the 16 Planck sources that lie in the ~90 sq. deg. examined, we find that 12 are associated with single bright Herschel sources. The remaining four are associated with overdensities of Herschel sources, making them candidate clusters of dusty, star-forming galaxies. We use complementary optical/near-IR data for these 'clumps' to test this idea, and find evidence for the presence of galaxy clusters in all four cases. We use photometric redshiftsand red sequence galaxies to estimate the redshifts of these clusters, finding that they range from 0.8 to 2.3. These redshifts imply that the Herschel sources in these clusters, which contribute to the detected Planck flux, are forming stars very rapidly, with typical total cluster star formation rates > 1000M⊙ yr-1. The high-redshift clusters discovered inthese observations are used to constrain the epoch of cluster galaxy formation, finding that the galaxies in our clusters are 1-1.5 Gyr old at z ~ 1-2. Prospects for the discovery of further clusters of dusty galaxies are discussed, using not only all sky Planck surveys, but also deeper, smaller area, Herschel surveys. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Authors & Co-Authors
Clements, David L.
Unknown Affiliation
Braglia, Filiberto G.
Unknown Affiliation
Hyde, Ashley K.
Unknown Affiliation
Pérez-Fournon, Ismael
Unknown Affiliation
Bock, James J.
Unknown Affiliation
Cava, Antonio
Unknown Affiliation
Chapman, Scott C.
Unknown Affiliation
Conley, Alexander J.
Unknown Affiliation
Cooray, Asantha Roshan
Unknown Affiliation
Farrah, Duncan G.
Unknown Affiliation
González-Solares, Eduardo A.
Unknown Affiliation
Marchetti, Lucia
Unknown Affiliation
Marsden, Gaelen
Unknown Affiliation
Oliver, Seb J.
Unknown Affiliation
Roseboom, Isaac G.
Unknown Affiliation
Schulz, Bernhard
Unknown Affiliation
Smith, Anthony J.
Unknown Affiliation
Vaccari, Mattia
Unknown Affiliation
Vieira, Joaquin D.
Unknown Affiliation
Viero, Marco P.
Unknown Affiliation
Wang, Lingyu
Unknown Affiliation
Wardlow, Julie L.
Unknown Affiliation
Zemcov, Michael B.
Unknown Affiliation
de Zotti, Gianfranco
Unknown Affiliation
Statistics
Citations: 50
Authors: 24
Affiliations: 22
Identifiers
Doi:
10.1093/mnras/stt2253
ISSN:
00358711
e-ISSN:
13652966
Study Design
Cross Sectional Study
Study Approach
Quantitative