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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2017

SCUBA-2 follow-up of Herschel-SPIRE observed Planck overdensities

Todd P. Mackenzie
  • Fonction : Auteur
Douglas Scott
Matteo Bianconi
David L. Clements
  • Fonction : Auteur
R. Kneissl
  • Fonction : Auteur
G. Lagache
Francine R. Marleau
  • Fonction : Auteur
N.P.H. Nesvadba
Etienne Pointecouteau

Résumé

We present SCUBA-2 follow-up of 61 candidate high-redshift Planck sources. Of these, 10 are confirmed strong gravitational lenses and comprise some of the brightest such submm sources on the observed sky, while 51 are candidate proto-cluster fields undergoing massive starburst events. With the accompanying Herschel-Spectral and Photometric Imaging Receiver observations and assuming an empirical dust temperature prior of $$34^{+13}_{-9}$$ K, we provide photometric redshift and far-IR luminosity estimates for 172 SCUBA-2-selected sources within these Planck overdensity fields. The redshift distribution of the sources peak between a redshift of 2 and 4, with one-third of the sources having S_500/S_350 > 1. For the majority of the sources, we find far-IR luminosities of approximately 10^13 L_⊙, corresponding to star formation rates of around 1000 M_⊙ yr^−1. For S_850 > 8 mJy sources, we show that there is up to an order of magnitude increase in star formation rate density and an increase in uncorrected number counts of 6 for S_850 > 8 mJy when compared to typical cosmological survey fields. The sources detected with SCUBA-2 account for only approximately 5 per cent of the Planck flux at 353 GHz, and thus many more fainter sources are expected in these fields.

Dates et versions

hal-01554911 , version 1 (03-07-2017)

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Citer

Todd P. Mackenzie, Douglas Scott, Matteo Bianconi, David L. Clements, Herve A. Dole, et al.. SCUBA-2 follow-up of Herschel-SPIRE observed Planck overdensities. Monthly Notices of the Royal Astronomical Society, 2017, 468 (4), pp.4006-4017. ⟨10.1093/mnras/stx512⟩. ⟨hal-01554911⟩
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