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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

Herschel reveals a molecular outflow in a z = 2.3 ULIRG Thumbnail


R.D. George

R.J. Ivison

R. Hopwood

F. Stanley

B.M. Swinyard

I. Valtchanov

P.P. van der Werf


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.

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
Keywords ISM: jets and outflows, Galaxies: high-redshift, Galaxies: ISM, Galaxies: starburst, Infrared: galaxies, Submillimetre: galaxies.
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Copyright Statement
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.

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