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Constraints on the galaxy 'main sequence' at z > 5: the stellar mass of HDF850.1

Serjeant, Stephen and Marchetti, Lucia (2014). Constraints on the galaxy 'main sequence' at z > 5: the stellar mass of HDF850.1. Monthly Notices of the Royal Astronomical Society, 443(4) pp. 3118–3126.

DOI (Digital Object Identifier) Link: https://doi.org/10.1093/mnras/stu1266
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Abstract

We present rest-frame optical and near-infrared detections of one of the highest redshift submm-selected galaxies to date, HDF850.1. We do not detect the previously proposed counterpart HDF850.1K in new deep J- and H-band Hubble Space Telescope Wide Field Camera 3 data, placing a strong limit of H − K > 3.8, concluding that the K-band source is spurious. However, we detect 5.8 and 8 μm emission co-located with the submm in deblended images. After modelling and removing the flux contributions from another foreground galaxy, we constrain the stellar mass of HDF850.1 to be (2.5 ± 1)μ−1 × 1011 M for a lensing magnification μ = 1.9 ± 0.3, with a specific star formation rate of 8.5 Gyr−1, faster than the 1–4 Gyr−1 observed for UV-selected galaxies at this epoch.

Item Type: Journal Item
Copyright Holders: 2014 The Authors
ISSN: 1365-2966
Keywords: galactic evolution; galactic formation; starburst galaxies; cosmology; infrared; galaxies
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Space
Item ID: 43573
Depositing User: Stephen Serjeant
Date Deposited: 30 Jun 2015 09:51
Last Modified: 07 Dec 2018 10:32
URI: http://oro.open.ac.uk/id/eprint/43573
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