A.L.R. Danielson
An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: Spectroscopic Redshifts
Danielson, A.L.R.; Swinbank, A.M.; Smail, I.; Simpson, J.M.; Casey, C.M.; Chapman, S.C.; da Cunha, E.; Hodge, J.A.; Walter, F.; Wardlow, J.L.; Alexander, D.M.; Brandt, W.N.; de Breuck, C.; Coppin, K.E.K.; Dannerbauer, H.; Dickinson, M.; Edge, A.C.; Gawiser, E.; Ivison, R.J.; Karim, A.; Kovacs, A.; Lutz, D.; Menten, K.; Schinnerer, E.; Weiß, A.; van der Werf, P.
Authors
Professor Mark Swinbank a.m.swinbank@durham.ac.uk
Professor
Ian Smail ian.smail@durham.ac.uk
Emeritus Professor
J.M. Simpson
C.M. Casey
S.C. Chapman
E. da Cunha
J.A. Hodge
F. Walter
J.L. Wardlow
Professor David Alexander d.m.alexander@durham.ac.uk
Professor
W.N. Brandt
C. de Breuck
K.E.K. Coppin
H. Dannerbauer
M. Dickinson
Professor Alastair Edge alastair.edge@durham.ac.uk
Professor
E. Gawiser
R.J. Ivison
A. Karim
A. Kovacs
D. Lutz
K. Menten
E. Schinnerer
A. Weiß
P. van der Werf
Abstract
We present spectroscopic redshifts of {\text{}}{S}870μ {{m}} ≳ 2 mJy submillimeter galaxies (SMGs), which have been identified from the ALMA follow-up observations of 870 μm detected sources in the Extended Chandra Deep Field South (the ALMA-LESS survey). We derive spectroscopic redshifts for 52 SMGs, with a median of z = 2.4 ± 0.1. However, the distribution features a high-redshift tail, with ∼23% of the SMGs at z≥slant 3. Spectral diagnostics suggest that the SMGs are young starbursts, and the velocity offsets between the nebular emission and UV ISM absorption lines suggest that many are driving winds, with velocity offsets of up to 2000 km s‑1. Using the spectroscopic redshifts and the extensive UV-to-radio photometry in this field, we produce optimized spectral energy distributions (SEDs) using Magphys, and use the SEDs to infer a median stellar mass of {M}\star = (6 ± 1)× 1010 M {}ȯ for our SMGs with spectroscopic redshift. By combining these stellar masses with the star formation rates (measured from the far-infrared SEDs), we show that SMGs (on average) lie a factor of ∼5 above the so-called “main sequence” at z∼ 2. We provide this library of 52 template fits with robust and uniquely well-sampled SEDs as a resource for future studies of SMGs, and also release the spectroscopic catalog of ∼2000 (mostly infrared-selected) galaxies targeted as part of the spectroscopic campaign.
Citation
Danielson, A., Swinbank, A., Smail, I., Simpson, J., Casey, C., Chapman, S., …van der Werf, P. (2017). An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: Spectroscopic Redshifts. Astrophysical Journal, 840(2), Article 78. https://doi.org/10.3847/1538-4357/aa6caf
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 22, 2017 |
Online Publication Date | May 9, 2017 |
Publication Date | May 9, 2017 |
Deposit Date | May 18, 2017 |
Publicly Available Date | May 18, 2017 |
Journal | Astrophysical Journal |
Print ISSN | 0004-637X |
Electronic ISSN | 1538-4357 |
Publisher | American Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 840 |
Issue | 2 |
Article Number | 78 |
DOI | https://doi.org/10.3847/1538-4357/aa6caf |
Public URL | https://durham-repository.worktribe.com/output/1358054 |
Related Public URLs | http://adsabs.harvard.edu/abs/2017ApJ...840...78D |
Files
Published Journal Article
(3 Mb)
PDF
Copyright Statement
© 2017. The American Astronomical Society. All rights reserved.
You might also like
The high energy X-ray probe (HEX-P): bringing the cosmic X-ray background into focus
(2024)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search