Herschel reveals a molecular outflow in a z = 2.3 ULIRG

George, R.D.; Ivison, R.J.; Smail, I.; Swinbank, A.M.; Hopwood, R.; Stanley, F.; Swinyard, B.M.; Valtchanov, I.; Werf, P.P. van der

doi:10.1093/mnras/stu967

Herschel reveals a molecular outflow in a z = 2.3 ULIRG

George, R.D.; Ivison, R.J.; Smail, I.; Swinbank, A.M.; Hopwood, R.; Stanley, F.; Swinyard, B.M.; Valtchanov, I.; Werf, P.P. van der

Authors

R.D. George

R.J. Ivison

Professor Ian Smail ian.smail@durham.ac.uk
Emeritus Professor

Professor Mark Swinbank a.m.swinbank@durham.ac.uk
Professor

R. Hopwood

F. Stanley

B.M. Swinyard

I. Valtchanov

P.P. van der Werf

Abstract

We report the results from a 19-h integration with the Spectral and Photometric Imaging REceiver (SPIRE) Fourier Transform Spectrometer aboard the Herschel Space Observatory which has revealed the presence of a molecular outflow from the Cosmic Eyelash (SMM J2135−0102) via the detection of blueshifted OH absorption. Detections of several fine-structure emission lines indicate low-excitation H ii regions contribute strongly to the [C ii] luminosity in this z = 2.3 ultra-luminous infrared galaxy (ULIRG). The OH feature suggests a maximum wind velocity of 700 km s− 1, which is lower than the expected escape velocity of the host dark matter halo, ≈ 1000 km s− 1. A large fraction of the available molecular gas could thus be converted into stars via a burst protracted by the resulting gas fountain, until an active galactic nucleus (AGN)-driven outflow can eject the remaining gas.

Citation

George, R., Ivison, R., Smail, I., Swinbank, A., Hopwood, R., Stanley, F., …Werf, P. V. D. (2014). Herschel reveals a molecular outflow in a z = 2.3 ULIRG. Monthly Notices of the Royal Astronomical Society, 442(2), 1877-1883. https://doi.org/10.1093/mnras/stu967

Journal Article Type	Article
Publication Date	Aug 1, 2014
Deposit Date	Nov 17, 2014
Publicly Available Date	Nov 24, 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	442
Issue	2
Pages	1877-1883
DOI	https://doi.org/10.1093/mnras/stu967
Keywords	ISM: jets and outflows, Galaxies: high-redshift, Galaxies: ISM, Galaxies: starburst, Infrared: galaxies, Submillimetre: galaxies.
Related Public URLs	http://adsabs.harvard.edu/abs/2014MNRAS.442.1877G

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This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.