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The Hawaii SCUBA-2 Lensing Cluster Survey: Radio-detected Submillimeter Galaxies in the HST Frontier Fields

Hsu, Li-Yen and Desai, Vandana and Murphy, Eric J. and Cowie, Lennox L. and Heywood, Ian and Momjian, Emmanuel and Barger, Amy J. and Smail, Ian (2017) The Hawaii SCUBA-2 Lensing Cluster Survey: Radio-detected Submillimeter Galaxies in the HST Frontier Fields. Astrophysical Journal, 840 (1). Art. No. 29. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20170502-131227157

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Abstract

In this second paper of the Hawaii SCUBA-2 Lensing Cluster Survey series, we cross-match SCUBA-2 maps with 3 and 6 GHz images from the Janksy-VLA Frontier Fields Legacy Survey for three cluster fields, MACS J0416.1–2403, MACS J0717.5+3745, and MACS J1149.5+2223. Within the HST coverage, 14 out of 44 850 μm sources have 3 GHz counterparts, five of which are also detected at 6 GHz. The 850 μm flux densities of these detected sources span from 0.7 to 4.4 mJy after correcting for lensing amplification. The median redshift of the sample is z = 1.28^(+0.07)_(-0.09), much lower than the typical redshifts (z = 2–3) of brighter submillimeter galaxies (SMGs) in the literature. In addition, we find that our sources have lower dust temperatures than those of the brighter SMGs. This is also confirmed by an analysis of the ratio between infrared star-formation rate and 850 μm flux density. However, these 14 sources may not represent the general submillimeter population at the same flux range, given that the SCUBA-2 sources without radio counterparts are likely at higher redshifts. Detection of these sources would require deeper radio images or submillimeter interferometry.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-4357/aa6ba0DOIArticle
http://iopscience.iop.org/article/10.3847/1538-4357/aa6ba0/metaPublisherArticle
https://arxiv.org/abs/1704.01159arXivDiscussion Paper
ORCID:
AuthorORCID
Desai, Vandana0000-0002-1340-0543
Murphy, Eric J.0000-0001-7089-7325
Cowie, Lennox L.0000-0002-6319-1575
Momjian, Emmanuel0000-0003-3168-5922
Smail, Ian0000-0003-3037-257X
Additional Information:© 2017 The American Astronomical Society. Received 2016 December 18; revised 2017 April 3; accepted 2017 April 3; published 2017 May 2. We gratefully acknowledge support from NSF grants AST-0709356 (L.Y.H. and L.L.C.) and AST-1313150 (A.J.B.), as well as the John Simon Guggenheim Memorial Foundation and Trustees of the William F. Vilas Estate (A.J.B.). I.R.S. acknowledges support from STFC (ST/L00075X/1), the ERC Advanced Investigator programme DUSTYGAL (321334), and a Royal Society/Wolfson Merit Award. The James Clerk Maxwell Telescope is operated by the East Asian Observatory on behalf of The National Astronomical Observatory of Japan, Academia Sinica Institute of Astronomy and Astrophysics, the Korea Astronomy and Space Science Institute, the National Astronomical Observatories of China and the Chinese Academy of Sciences (Grant No. XDB09000000), with additional funding support from the Science and Technology Facilities Council of the United Kingdom and participating universities in the United Kingdom and Canada. The James Clerk Maxwell Telescope has historically been operated by the Joint Astronomy Centre on behalf of the Science and Technology Facilities Council of the United Kingdom, the National Research Council of Canada and the Netherlands Organisation for Scientific Research. Additional funds for the construction of SCUBA-2 were provided by the Canada Foundation for Innovation. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. We acknowledge the cultural significance that the summit of Maunakea has to the indigenous Hawaiian community.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NSFAST-0709356
NSFAST-1313150
John Simon Guggenheim FoundationUNSPECIFIED
William F. Vilas EstateUNSPECIFIED
Science and Technology Facilities Council (STFC)ST/L00075X/1
European Research Council (ERC)321334
Royal SocietyUNSPECIFIED
Chinese Academy of SciencesXDB09000000
Subject Keywords:cosmology: observations – galaxies: starburst – Galaxy: evolution – Galaxy: formation – gravitational lensing: strong – submillimeter: galaxies
Issue or Number:1
Record Number:CaltechAUTHORS:20170502-131227157
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170502-131227157
Official Citation:Li-Yen Hsu et al 2017 ApJ 840 29
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77128
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:02 May 2017 20:25
Last Modified:28 Oct 2019 18:23

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