RADIO AND X-RAY PROPERTIES OF SUBMILLIMETER GALAXIES IN THE A2125 FIELD

Journal Article · Fri Jul 10 04:00:00 EDT 2009 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/699/2/1843; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21313926

Wagg, J; Owen, F; Carilli, C L ^[1]; Bertoldi, F; Menten, K M; Voss, H ^[2]; Sawitzki, M ^[3]

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1. National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801 (United States)
2. Max-Planck Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany)
3. Radioastronomisches Institut der Universitaet Bonn, Auf dem Huegel 71, D-53121 Bonn (Germany)

We present the radio and X-ray properties of 1.2 mm MAMBO source candidates in a 1600 arcmin{sup 2} field centered on the Abell 2125 galaxy cluster at z = 0.247. The brightest, nonsynchrotron millimeter source candidate in the field has a photometric redshift z = 3.93{sup +1.11}{sub -0.80} and is not detected in a 31 ks Chandra X-ray exposure. These findings are consistent with this object being an extremely dusty and luminous starburst galaxy at high redshift, possibly the most luminous yet identified in any blank-field millimeter survey. The deep 1.4 GHz Very Large Array imaging identifies counterparts for 83% of the 29 mm source candidates identified at {>=}4{sigma} (S{sub 1.2mm} = 2.7-52.1 mJy), implying that the majority of these objects are likely to lie at z {approx}< 3.5. The median millimeter-to-radio wavelength photometric redshift of this radio-detected sample is z {approx} 2.2 (first and third quartiles of 1.7 and 3.0), consistent with the median redshift derived from optical spectroscopic surveys of the radio-detected subsample of bright submillimeter galaxies (S{sub 850{mu}}{sub m} > 5 mJy). Three millimeter-selected quasars are confirmed to be X-ray luminous in the high-resolution Chandra imaging, while another millimeter source candidate with potential multiple radio counterparts is also detected in the X-ray regime. Both of these radio counterparts are positionally consistent with the millimeter source candidate. One counterpart is associated with an elliptical galaxy at z = 0.2425, but we believe that a second counterpart associated with a fainter optical source likely gives rise to the millimeter emission at z {approx} 1.

• OSTI ID: 21313926
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 699; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
EMISSION
GALAXY CLUSTERS
QUASARS
RED SHIFT
X-RAY GALAXIES