2003A&A...400..871C


Query : 2003A&A...400..871C

2003A&A...400..871C - Astronomy and Astrophysics, volume 400, 871-875 (2003/3-4)

Observations of the high-redshift galaxy B2 0902+343 at 92 cm.

CODY A.M. and BRAUN R.

Abstract (from CDS):

We present 92 cm observations of the high-redshift galaxy B2 0902+343 (z=3.40) with the Westerbork Synthesis Radio Telescope (WSRT). Twenty-one cm HI is detected in absorption, at a depth of 15.9mJy (=6σ) and rest frame velocity width 120km/s. We also report a null detection of OH emission or absorption at the 1665/1667MHz rest-frame transitions. Based on our spectral sensitivity, we derive an upper limit on OH maser luminosity of log(L/L)<5.2. In addition, we consider the possibility of absorption, and estimate a maximum column depth N(OH) of 1x1015cm–2, corresponding to at most 2x105-9x106M of OH in the galaxy. The implications of these results are discussed in the context of current efforts to extend the OH megamaser luminosity function and galactic merger rate to high redshift.

Abstract Copyright:

Journal keyword(s): galaxies: individual: B2 0902+343 - radio lines: galaxies - galaxies: high-redshift - cosmology: observations

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2705 2
2 NVSS J090530+340756 rG 09 05 30.101 +34 07 56.90   24.0 23.800 23.500   ~ 154 1
3 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4143 2
4 QSO B1830-211 Bla 18 33 39.9399138048 -21 03 39.368838780     18.70 21   ~ 623 1

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2022.11.28-13:36:36

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