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ZEUS Detection of [CII] at z = 1.12

Published online by Cambridge University Press:  04 October 2008

S. Hailey-Dunsheath*
Affiliation:
Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
T. Nikola
Affiliation:
Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
T. Oberst
Affiliation:
Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
S. Parshley
Affiliation:
Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
G.J. Stacey
Affiliation:
Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
D. Farrah
Affiliation:
Department of Astronomy, Cornell University, Ithaca, NY 14853, USA
D.J. Benford
Affiliation:
NASA-Goddard Space Flight Center, Greenbelt, MD 20771, USA
J. Staguhn
Affiliation:
NASA-Goddard Space Flight Center, Greenbelt, MD 20771, USA
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Abstract

We report the detection of the 158 μm [CII] line from the LIR ~ 1014 L galaxy FSC 10026+4949 at z = 1.12. This is the first detection of [CII] from the z = 1-3 epoch of enhanced starformation. The L[CII]/LFIR ratio is 1.3 × 10-3, larger than the ratio typically seen in local ULIRGs, but similar to that measured in normal and starburst galaxies. This high ratio implies that the UV fields powering the far-infrared emission are of only modest intensity, and that FSC 10026+4949 may be undergoing a galaxy-wide starburst.

Type
Research Article
Copyright
© EAS, EDP Sciences, 2008

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