2001ApJ...547...39B

Query : 2001ApJ...547...39B

2001ApJ...547...39B - Astrophys. J., 547, 39-49 (2001/January-3)

Where are the absorbers toward Q2302+029?

BOWEN D.V., JIMENEZ R., JENKINS E.B. and PETTINI M.

Abstract (from CDS):

We present images and spectroscopy of objects close to the sight line of Q2302+029 in order to search for galaxies responsible for the remarkable z=0.7 high-ionization absorption-line system found by Jannuzi et al. This system shows ``normal'' narrow O VI, N V, and C IV lines superimposed on broader (3000-5000 km.s–1 wide), unsaturated absorption troughs some 56,000 km.s–1 away from the QSO emission redshift (zem=1.052). Despite reaching sensitivities sufficient to detect 1/10L* galaxies in the optical and 1/20L* in the infrared, we are unable to detect any obvious bright galaxies that might be responsible for the absorption beyond ~6 h–1 kpc of the sight line. This supports the hypotheses that the absorption is either intrinsic to the QSO or arises in intracluster gas. Adopting either explanation is problematic: in the first case, ``associated'' absorption at such high ejection velocities is difficult to understand, and challenges the conventional discrimination between intrinsic and extrinsic absorbers; in the second case, the gas must reside in a ∼40 h–1 Mpc long filament aligned along the line of sight in order to reproduce the broad absorption. Since the absorption system is unusual, such a chance alignment might not be unreasonable. Spectroscopy of objects beyond the immediate vicinity of the QSO sight line reveals a galaxy cluster at z=0.59, which coincides with strong Lyα and more narrow high-ionization lines in the quasar spectrum. Here, too, the lack of galaxies at distances comparable to those found for, e.g., Lyα-absorbing galaxies, suggests that the absorption may arise from intracluster gas unassociated with any individual galaxies.

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Journal keyword(s): Cosmology: Large-Scale Structure of Universe - Galaxies: Quasars: Absorption Lines - quasars: individual (Q2302+029)

Nomenclature: Tables 1, 3: [BJJ2001] NNNN N=41+24 among (Nos 65-1000).

Simbad objects: 65

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Number of rows : 65
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 ICRF J154743.5+205216 Sy1 15 47 43.5376371336 +20 52 16.612810320   16.80 16.69 15.70   ~ 521 1
2 [MJ2006] J230432.0+031118.8 G 23 04 31.99 +03 11 18.7   21.6   20.2   ~ 2 0
3 [MJ2006] J230439.0+031153.0 G 23 04 38.92 +03 11 52.8   22.1   20.9   ~ 2 0
4 [MJ2006] J230440.8+030930.1 G 23 04 40.76 +03 09 29.3   23.0   22.1   ~ 2 0
5 [PBF95] W11-5 G 23 04 41.47 +03 08 36.3   22.6   21.1   ~ 3 0
6 [MJ2006] J230441.6+031336.0 G 23 04 41.56 +03 13 36.2   20.9   18.0   ~ 2 0
7 [MJ2006] J230442.5+031020.0 G 23 04 42.47 +03 10 19.2       21.7   ~ 2 0
8 [BJJ2001] 932 G 23 04 42.50 +03 11 32.7   25.1       ~ 1 0
9 [MJ2006] J230442.5+031017.6 G 23 04 42.51 +03 10 16.9   21.1   20.9   ~ 2 0
10 [BJJ2001] 494 G 23 04 42.72 +03 11 42.6   24.8       ~ 1 0
11 [BJJ2001] 493 G 23 04 42.80 +03 11 40.2           ~ 1 0
12 [BJJ2001] 999 G 23 04 42.82 +03 11 20.7           ~ 1 0
13 [BJJ2001] 484 G 23 04 42.99 +03 11 20.6   24.3       ~ 1 0
14 [BJJ2001] 997 G 23 04 43.41 +03 11 24.2           ~ 1 0
15 [BJJ2001] 925 G 23 04 43.49 +03 11 36.4   25.9       ~ 1 0
16 [BJJ2001] 996 G 23 04 43.60 +03 11 28.4           ~ 1 0
17 [BJJ2001] 441 G 23 04 43.63 +03 11 53.8   25.3       ~ 1 0
18 [BJJ2001] 439 G 23 04 43.92 +03 11 31.9           ~ 1 0
19 [BJJ2001] 442 G 23 04 43.93 +03 11 44.2           ~ 1 0
20 [KSS94] J230445.0+031146 5 G 23 04 44.29 +03 12 55.6   22.9   21.7   ~ 3 0
21 [BJJ2001] 995 G 23 04 44.38 +03 11 33.6           ~ 1 0
22 [BJJ2001] 419 G 23 04 44.40 +03 12 21.8   24.4       ~ 1 0
23 [BJJ2001] 428 G 23 04 44.44 +03 11 37.2   24.9       ~ 1 0
24 [BJJ2001] 411 G 23 04 44.57 +03 11 53.9           ~ 1 0
25 [BJJ2001] 423 G 23 04 44.64 +03 12 12.5           ~ 1 0
26 [BJJ2001] 403 G 23 04 44.82 +03 11 15.5   24.4       ~ 1 0
27 [MJ2006] J230444.8+031124.0 G 23 04 44.83 +03 11 23.5   24.0   22.4   ~ 2 0
28 [BJJ2001] 992 G 23 04 44.83 +03 11 51.0           ~ 1 0
29 PB 5235 QSO 23 04 44.9534365920 +03 11 45.917366280   15.44 15.8     ~ 105 0
30 [BJJ2001] 396 G 23 04 45.03 +03 11 17.0   24.4       ~ 1 0
31 [BJJ2001] 385 G 23 04 45.38 +03 12 20.1           ~ 1 0
32 [KSS94] J230445.0+031146 13 G 23 04 45.50 +03 12 22.2   22.3   21.4   ~ 3 0
33 [BJJ2001] 382 G 23 04 45.51 +03 11 43.6           ~ 1 0
34 [KSS94] J230445.0+031146 26 G 23 04 45.62 +03 11 02.9   22.9   21.7   ~ 3 0
35 [KSS94] J230445.0+031146 11 G 23 04 45.67 +03 12 24.4   23.5   21.5   ~ 3 0
36 [BJJ2001] 1000 G 23 04 45.82 +03 12 22.4           ~ 1 0
37 [KSS94] J230445.0+031146 4 G 23 04 45.93 +03 12 56.9   22.0   21.3   ~ 3 0
38 [BJJ2001] 994 G 23 04 45.94 +03 11 46.2           ~ 1 0
39 [BJJ2001] 373 G 23 04 46.00 +03 11 14.8           ~ 1 0
40 [BJJ2001] 993 G 23 04 46.02 +03 11 42.6           ~ 1 0
41 [KSS94] J230445.0+031146 29 G 23 04 46.21 +03 10 35.4   23.4   21.0   ~ 3 0
42 [BJJ2001] 998 G 23 04 46.28 +03 11 20.3           ~ 1 0
43 [BJJ2001] 364 G 23 04 46.36 +03 11 55.1           ~ 1 0
44 [MJ2006] J230446.4+031508.3 G 23 04 46.39 +03 15 08.6   24.0   21.3   ~ 2 0
45 [MJ2006] J230446.6+031119.3 G 23 04 46.64 +03 11 18.8   21.6   20.1   ~ 2 0
46 [BJJ2001] 358 G 23 04 46.65 +03 12 06.3   24.0       ~ 1 0
47 [BJJ2001] 351 G 23 04 46.83 +03 12 01.8   24.2       ~ 1 0
48 [BJJ2001] 320 G 23 04 46.96 +03 11 23.1   20.9       ~ 1 0
49 [BJJ2001] 349 G 23 04 46.96 +03 11 57.8   24.5       ~ 1 0
50 [BJJ2001] 345 G 23 04 46.98 +03 11 36.5           ~ 1 0
51 [BJJ2001] 342 G 23 04 47.10 +03 11 40.0           ~ 1 0
52 [BJJ2001] 350 G 23 04 47.12 +03 11 50.9   25.7       ~ 1 0
53 [BJJ2001] 338 G 23 04 47.16 +03 11 35.5           ~ 1 0
54 [BJJ2001] 347 G 23 04 47.19 +03 11 53.3           ~ 1 0
55 [MJ2006] J230447.2+030926.8 G 23 04 47.21 +03 09 25.8   24.2   22.0   ~ 2 0
56 [BJJ2001] 330 G 23 04 47.21 +03 11 32.5           ~ 1 0
57 [KSS94] J230445.0+031146 9 G 23 04 48.32 +03 12 42.7   22.8   21.5   ~ 3 0
58 [KSS94] J230445.0+031146 22 G 23 04 48.55 +03 11 25.5   23.1   20.4   ~ 3 0
59 [MJ2006] J230449.5+031205.4 G 23 04 49.49 +03 12 05.2   22.7   22.1   ~ 2 0
60 [MJ2006] J230452.8+031334.0 G 23 04 52.79 +03 13 34.0   22.1   21.4   ~ 2 0
61 [MJ2006] J230454.0+031340.4 G 23 04 54.06 +03 13 40.4   22.5   20.7   ~ 2 0
62 [MJ2006] J230454.7+031259.7 G 23 04 54.70 +03 12 59.5   22.7   21.5   ~ 2 0
63 [MJ2006] J230455.1+031056.1 G 23 04 55.15 +03 10 55.5   22.0   20.9   ~ 2 0
64 [MJ2006] J230456.7+031343.1 G 23 04 56.77 +03 13 42.8   23.1   21.9   ~ 2 0
65 QSO B2343+125 QSO 23 46 28.200 +12 49 00.00     17.5     ~ 143 2

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