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An extragalactic spectroscopic survey of the SSA22 field

Saez, C.; Lehmer, B.D.; Bauer, F.E.; Stern, D.; Gonzales, A.; Rreza, I.; Alexander, D.M.; Matsuda, Y.; Geach, J.E.; Harrison, F.A.; Hayashino, T.

An extragalactic spectroscopic survey of the SSA22 field Thumbnail


C. Saez

B.D. Lehmer

F.E. Bauer

D. Stern

A. Gonzales

I. Rreza

Y. Matsuda

J.E. Geach

F.A. Harrison

T. Hayashino


We present Very Large Telescope VIMOS, Keck DEIMOS and Keck LRIS multi-object spectra of 367 sources in the field of the z ≈ 3.09 protocluster SSA22. Sources are spectroscopically classified via template matching, allowing new identifications for 206 extragalactic sources, including 36 z > 2 Lyman-break galaxies (LBGs) and Lyman α emitters (LAEs), eight protocluster members, and 94 X-ray sources from the ∼400 ks Chandra deep survey of SSA22. Additionally, in the area covered by our study, we have increased by ≈4, 13, and 6 times the number of reliable redshifts of sources at 1.0 < z < 2.0, at z > 3.4, and with X-ray emission, respectively. We compare our results with past spectroscopic surveys of SSA22 to investigate the completeness of the LBGs and the X-ray properties of the new spectroscopically classified sources in the SSA22 field.


Saez, C., Lehmer, B., Bauer, F., Stern, D., Gonzales, A., Rreza, I., …Hayashino, T. (2015). An extragalactic spectroscopic survey of the SSA22 field. Monthly Notices of the Royal Astronomical Society, 450(3), 2615-2630.

Journal Article Type Article
Acceptance Date Apr 2, 2015
Publication Date Jul 1, 2015
Deposit Date May 15, 2015
Publicly Available Date May 19, 2015
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 450
Issue 3
Pages 2615-2630
Keywords Techniques: imaging spectroscopy, Surveys, Galaxies: active, Galaxies: clusters: general, X-rays: galaxies.
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Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. ©: 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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