Projects per year
Abstract
We investigate the region around the Planck-detected z=3.26 gravitationally lensed galaxy HATLAS J114637.9-001132 (hereinafter HATLAS12-00) using both archival Herschel data from the H-ATLAS survey and using submm data obtained with both LABOCA and SCUBA2. The lensed source is found to be
surrounded by a strong overdensity of both Herschel-SPIRE sources and submm sources. We detect 17 bright (S870
> ∼7 mJy) sources at >4σ closer than 5 arcmin to the lensed
object at 850/870μm. Ten of these sources have good
cross-identifications
with objects detected by Herschel-SPIRE
which have redder colours than other sources in the field, with 350μm
flux > 250μm flux, suggesting that they lie at
high redshift. Submillimeter Array (SMA)
observations localise one of these companions to ∼1 arcsecond, allowing
unambiguous
cross identification with a 3.6 and 4.5 μm Spitzer source. The optical/near-IR spectral energy distribution (SED) of this source is measured by further observations and found
to be consistent with z > 2, but
incompatible with lower redshifts. We conclude that this system may be a
galaxy cluster/protocluster or larger scale
structure that contains a number of galaxies
undergoing starbursts at the same time.
Original language | English |
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Pages (from-to) | 1719-1733 |
Number of pages | 16 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 461 |
Issue number | 2 |
Early online date | 31 May 2016 |
DOIs | |
Publication status | Published - 11 Sep 2016 |
Keywords
- galaxies:starburst
- submillimetre:galaxies
- galaxies:high redshift
- galaxies:clusters
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Dive into the research topics of 'H-ATLAS: A Candidate High Redshift Cluster/Protocluster of Star-Forming Galaxies'. Together they form a unique fingerprint.Projects
- 2 Finished
-
Research in planetary formation, astrophysics, and cosmology at Bristol
1/04/15 → 31/03/18
Project: Research
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Research in planetary physics, astrophysics and cosmology at Bristol
1/04/12 → 1/04/15
Project: Research