2011ApJ...727...40F

Query : 2011ApJ...727...40F

2011ApJ...727...40F - Astrophys. J., 727, 40 (2011/January-3)

Deep 21 cm H I observations at z ~ 0.1: the precursor to the Arecibo Ultra Deep Survey.

FREUDLING W., STAVELEY-SMITH L., CATINELLA B., MINCHIN R., CALABRETTA M., MOMJIAN E., ZWAAN M., MEYER M. and O'NEIL K.

Abstract (from CDS):

The "ALFA Ultra Deep Survey" (AUDS) is an ongoing 21 cm spectral survey with the Arecibo 305 m telescope. AUDS will be the most sensitive blind survey undertaken with Arecibo's 300 MHz Mock spectrometer. The survey searches for 21 cm H I line emission at redshifts between 0 and 0.16. The main goals of the survey are to investigate the H I content and probe the evolution of H I gas within that redshift region. In this paper, we report on a set of precursor observations with a total integration time of 53 hr. The survey detected a total of eighteen 21 cm emission lines at redshifts between 0.07 and 0.15 in a region centered around α2000~ 0h, δ ~ 15°42'. The rate of detection is consistent with the one expected from the local H I mass function. The derived relative H I density at the median redshift of the survey is ρ_ H I_[z = 0.125] = (1.0±0.3)ρ0, where ρ0 is the H I density at zero redshift.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: evolution - radio lines: galaxies

Nomenclature: Fig. 2, Table 2: [FSC2011] AUDS N-N N=18.

Simbad objects: 27

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Number of rows : 27
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 [FSC2011] AUDS 1-3 G 00 00 08.1 +15 37 28           ~ 1 0
2 [FSC2011] AUDS 3-2 G 00 00 08.1 +15 47 52           ~ 1 0
3 SDSS J000011.10+154212.8 GiC 00 00 11.1043298784 +15 42 12.781222452           ~ 2 0
4 [FSC2011] AUDS 1-4 G 00 00 12.3 +15 37 28           ~ 1 0
5 LEDA 4009303 G 00 00 14.925 +15 43 42.60           ~ 4 0
6 2MASX J00001671+1541400 G 00 00 16.7611563984 +15 41 40.160735844           ~ 4 0
7 [FSC2011] AUDS 1-5 G 00 00 20.6 +15 37 28           ~ 1 0
8 [FSC2011] AUDS 2-7 G 00 00 28.9 +15 42 40           ~ 1 0
9 [FSC2011] AUDS 3-3 G 00 00 33.0 +15 47 52           ~ 1 0
10 SDSS J000039.02+154551.1 G 00 00 39.0142808688 +15 45 51.042454200           ~ 2 0
11 [FSC2011] AUDS 3-4 G 00 00 41.4 +15 47 52           ~ 1 0
12 [FSC2011] AUDS 3-5 G 00 00 49.7 +15 47 52           ~ 1 0
13 [FSC2011] AUDS 2-8 G 00 00 58.0 +15 42 40           ~ 1 0
14 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 825 0
15 ACO 963 ClG 10 17 03.4 +39 02 56           ~ 414 0
16 SDSS J104433.04-012502.0 QSO 10 44 33.040 -01 25 02.08     21.81     ~ 182 1
17 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
18 ACO 2192 ClG 16 27 24.4 +42 40 43           ~ 65 0
19 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
20 SDSS J235914.87+153457.2 G 23 59 14.8827586560 +15 34 57.299810700           ~ 1 0
21 [FSC2011] AUDS 1-1 G 23 59 18.3 +15 37 28           ~ 1 0
22 2MASX J23591875+1536419 LIN 23 59 18.7655799696 +15 36 42.161846508           ~ 3 0
23 LEDA 3379606 G 23 59 36.442 +15 50 29.44           ~ 8 0
24 LEDA 1491516 G 23 59 48.438 +15 42 43.92           ~ 3 0
25 [FSC2011] AUDS 2-2 G 23 59 51.5 +15 42 40           ~ 1 0
26 [FSC2011] AUDS 2-3 G 23 59 59.8 +15 42 40           ~ 1 0
27 SDSS J235959.98+154235.9 G 23 59 59.987 +15 42 35.93           ~ 1 0

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