D. Guidetti
e-MERLIN observations at 5 GHz of the GOODS-N region: pinpointing AGN cores in high-redshift galaxies
Guidetti, D.; Bondi, M.; Prandoni, I.; Beswick, R.J.; Muxlow, T.W.B.; Wrigley, N.; Smail, I.; McHardy, I.
Authors
M. Bondi
I. Prandoni
R.J. Beswick
T.W.B. Muxlow
N. Wrigley
Ian Smail ian.smail@durham.ac.uk
Emeritus Professor
I. McHardy
Abstract
We present 5 GHz e-Multi-Element Radio-Linked Interferometer Network (e-MERLIN) observations of the Great Observatories Origins Deep Surveys North (GOODS)-N region at sub-arcsec resolution (0.2–0.5 arcsec). These data form part of the early commissioning observations for the e-MERLIN interferometer and a pilot for the e-MERLIN legacy programme e-MERLIN Galaxy Evolution Survey (eMERGE). A total of 17 sources were detected with S/N > 3. These observations provide unique information on the radio source morphology at sub-arcsec scales. For twelve of these sources, deeper 1.4 GHz MERLIN+Very Large Array observations at the same spatial resolution are available, allowing radio spectral indices to be derived for 10 sources on sub-arcsec angular scales. Via analysis of the spectral indices and radio morphologies, these sources have been identified as active galactic nucleus (AGN) cores in moderate-to-high-redshift (1 < z < 4) galaxies. These results have provided AGN (or AGN-candidate) classification for six previously unclassified sources and confirmed the AGN nature of the rest of the sample. Ultimately, the eMERGE project will image the GOODS-N region at 1.4 and 5 GHz with higher resolution (about 50 mas at 5 GHz) and down to sub-μJy sensitivities. The unique combination of sensitivity and spatial resolution will be exploited to study star formation and AGN activity in distant galaxies.
Citation
Guidetti, D., Bondi, M., Prandoni, I., Beswick, R., Muxlow, T., Wrigley, N., …McHardy, I. (2013). e-MERLIN observations at 5 GHz of the GOODS-N region: pinpointing AGN cores in high-redshift galaxies. Monthly Notices of the Royal Astronomical Society, 432(4), 2798-2807. https://doi.org/10.1093/mnras/stt633
Journal Article Type | Article |
---|---|
Publication Date | Jul 1, 2013 |
Deposit Date | Apr 15, 2014 |
Publicly Available Date | Jun 20, 2014 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 432 |
Issue | 4 |
Pages | 2798-2807 |
DOI | https://doi.org/10.1093/mnras/stt633 |
Keywords | Galaxies: active, Galaxies: evolution, Galaxies: starburst, Cosmology: observations, Radio continuum: galaxies. |
Public URL | https://durham-repository.worktribe.com/output/1456345 |
Files
Published Journal Article
(998 Kb)
PDF
Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society © 2013 The Authors Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.
You might also like
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