2004ApJ...614..671C

Query : 2004ApJ...614..671C

2004ApJ...614..671C - Astrophys. J., 614, 671-678 (2004/October-3)

A population of hot, dusty ultraluminous galaxies at z∼2.

CHAPMAN S.C., SMAIL I., BLAIN A.W. and IVISON R.J.

Abstract (from CDS):

We report spectroscopic redshifts for 18 µJy radio galaxies at a mean redshift of z=2.2 that are faint at both submillimeter and optical wavelengths. While the radio fluxes of these galaxies could indicate far-IR luminosities comparable to high-redshift submillimeter-selected galaxies (≳1012 L☉), none are detected in the submillimeter. We propose that this new population of galaxies represents an extension of the high-redshift submillimeter galaxy population but with hotter characteristic dust temperatures that shift the peak of their far-IR emission to shorter wavelengths, reducing the submillimeter flux below the sensitivity of current instruments. Therefore, surveys in the submillimeter waveband may miss up to half of the most luminous, dusty galaxies at z~2. Mid-infrared observations with the Spitzer Space Telescope will be a powerful tool to test this hypothesis.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Observations - Galaxies: Evolution - Galaxies: Formation - Galaxies: Starburst

VizieR on-line data: <Available at CDS (J/ApJ/614/671): table1.dat>

Nomenclature: Table 1: [CSB2004b] RG JHHMMSS.ss+DDMMSS.s N=18.

Simbad objects: 24

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Number of rows : 24
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [CSB2004b] RG J030257.94+001016.3 AGN 03 02 57.94 +00 10 16.3         22.46 ~ 10 0
2 4C 41.17 rG 06 50 52.098 +41 30 30.53           ~ 349 1
3 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0
4 [CIR2010] J105154.235+572325.00 Sy1 10 51 54.3 +57 23 25         23.60 ~ 5 0
5 [CSB2004b] RG J105204.22+572745.7 G 10 52 04.22 +57 27 45.7         23.14 ~ 2 0
6 [CSB2004b] RG J105209.31+572202.8 G 10 52 09.31 +57 22 02.8         24.38 ~ 3 0
7 XMMU J105225.5+572551 AGN 10 52 25.50 +57 25 50.7         23.80 ~ 7 0
8 [CSB2004b] RG J105239.84+572509.1 AGN 10 52 39.840 +57 25 09.12         22.45 ~ 4 0
9 GNS 1826 AGN 12 36 17.54 +62 15 40.7 23.80 25.336 25.215 24.7 23.9 ~ 31 0
10 GNS 2798 AGN 12 36 23.53 +62 16 42.6     24.59   23.9 ~ 24 0
11 CXOHDFN J123640.7+621010 AGN 12 36 40.6888 +62 10 09.909         25.84 ~ 9 0
12 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1967 1
13 CXO J123703.9+621156 Sy2 12 37 03.98 +62 11 57.4   26.7083 25.58 25.1 25.1251 ~ 27 0
14 [CSB2004b] RG J131207.74+423945.0 G 13 12 07.74 +42 39 45.0         24.15 ~ 4 0
15 [CSB2004b] RG J131208.34+424144.4 Sy1 13 12 08.3 +42 41 44         22.91 ~ 6 0
16 SSA 13 reg 13 12 16.5 +42 44 39           ~ 110 0
17 [CSB2004b] RG J131236.05+424044.1 G 13 12 36.05 +42 40 44.1         23.75 ~ 6 1
18 [CSB2004b] RG J131237.95+424006.0 AGN 13 12 37.95 +42 40 06.0         23.78 ~ 2 0
19 [CSB2004b] RG J163642.74+405515.4 AGN 16 36 42.74 +40 55 15.4         24.47 ~ 4 0
20 ELAIS N2 reg 16 36 48.0 +41 01 45           ~ 168 0
21 [VV2006] J163655.8+405909 QSO 16 36 55.769 +40 59 09.86 22.63   23.07 23.00 23.02 ~ 22 0
22 [UTK2017] ADF22.18 AGN 22 17 32.23 +00 15 27.8   24.94 24.81 24.80 23.72 ~ 7 0
23 SSA 22 reg 22 17 34.7 +00 15 07           ~ 351 0
24 SAS-LBG SSA22a-C20 G 22 17 46.30 +00 14 23.4         22.86 ~ 3 0

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