2006A&A...454..151V


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.18CEST14:33:43

2006A&A...454..151V - Astronomy and Astrophysics, volume 454, 151-164 (2006/7-4)

Extinction and metal column density of HI regions up to redshift z ≃2.

VLADILO G., CENTURION M., LEVSHAKOV S.A., PEROUX C., KHARE P., KULKARNI V.P. and YORK D.G.

Abstract (from CDS):

We used the photometric database of the Sloan Digital Sky Survey (SDSS) to estimate the reddening of 13 SDSS quasars selected on the basis of the presence of zinc absorption lines in an intervening Damped Ly α (DLA) system. In 5 of these quasars the reddening is detected at >2σ confidence level in two independent color indices of the SDSS ugriz photometric system. A detailed analysis of the data supports an origin of the reddening in the intervening absorbers. We used these rare measurements of extinction in DLA systems to probe the relation between extinction and metal column density in the interval of absorption redshift 0.7≲z≲2.0. We find that the mean extinction in the V band per atom of iron in the dust is remarkably similar to that found in interstellar clouds of the Milky Way. This result lends support to previous estimates of the dust obscuration effect in DLA systems based on a Milky Way extinction/metal column density relation. We propose a simple mechanism, based on dust grain destruction/accretion properties, which may explain the approximate constancy of the extinction per atom of iron in the dust.

Abstract Copyright:

Journal keyword(s): ISM: dust, extinction - galaxies: abundances - galaxies: ISM - galaxies: high-redshift - galaxies: quasars: absorption lines

Simbad objects: 32

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Number of rows : 32

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 LBQS 0010-0012 QSO 00 13 06.1513833715 +00 04 31.945146837   19.29 19.05     ~ 80 0
2 [CBM2000] QSO J0016-0012 abs 1.9730 DLA 00 16 02.40 -00 12 25.0           ~ 23 0
3 LBQS 0013-0029 QSO 00 16 02.4050445836 -00 12 25.076529860   18.67 18.36     ~ 169 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9091 1
5 SK 155 * 01 14 50.2609110337 -73 20 17.853632425 11.35 12.33 12.48     O9Ib 53 0
6 [WHG2004] QSO J0121+0027 abs 1.3880 G 01 21 47.73 +00 27 18.6           ~ 3 1
7 QSO J0121+0027 QSO 01 21 47.7353362993 +00 27 18.721789696   20.33 19.85     ~ 31 1
8 [PGW2003b] QSO J0948+4323 abs 1.233 DLA 02 35 56.83 +16 15 23.9           ~ 4 0
9 QSO B0235+1624 BLL 02 38 38.93010 +16 36 59.2746   16.46 15.50 15.92   ~ 1366 2
10 YYG A G 02 38 38.94 +16 36 57.4   20.31       ~ 37 0
11 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5375 1
12 QSO B0438-43 QSO 04 40 17.1805718498 -43 33 08.609959495   19.31 19.5 18.2   ~ 246 1
13 4C -02.19 QSO 05 01 12.80988366 -01 59 14.2562534   19.1 18.4 19.04   ~ 505 1
14 [RKV2003] QSO J0938+4128 abs 1.3720 DLA 09 38 57.01 +41 28 21.2           ~ 13 0
15 QSO J0938+4128 QSO 09 38 57.0177885802 +41 28 21.215479818   16.94 16.75     ~ 120 1
16 QSO B0945+4337 QSO 09 48 35.9614505438 +43 23 02.598710338   18.54 18.37     ~ 46 0
17 2QZ J101018.2+000350 QSO 10 10 18.1900018291 +00 03 51.270617654   18.80 18.54     ~ 39 0
18 [KKL2004] QSO J1107+0048 abs 0.7405 DLA 11 07 29.03 +00 48 11.1           ~ 5 0
19 QSO J1107+0048 QSO 11 07 29.0356028831 +00 48 11.290138100   17.89 17.54     ~ 48 0
20 [PSL2000] QSO J1159+0112 abs 1.944 DLA 11 59 44.82 +01 12 06.9           ~ 17 0
21 QSO B1157+014 QSO 11 59 44.8277890111 +01 12 06.984367162   17.87 17.52     ~ 193 1
22 [RKV2003] QSO J1232-0224 abs 0.3953 DLA 12 32 00.01 -02 24 04.7           ~ 18 0
23 4C -02.55 QSO 12 32 00.0157879377 -02 24 04.790684994   17.41 17.06 16.4   ~ 372 1
24 LBQS 1320-0006 QSO 13 23 23.7865596488 -00 21 55.237045525   18.70 18.22     ~ 71 0
25 ALMA J132323.81-002154.1 G 13 23 23.81 -00 21 54.1           ~ 8 0
26 [RTN2006] QSO J1501+0019 abs 1.4832 DLA 15 01 23.45 +00 19 39.9           ~ 2 0
27 QSO J1501+0019 QSO 15 01 23.4540009936 +00 19 40.045038664   18.28 18.12     ~ 35 0
28 * zet Oph Be* 16 37 09.5390545 -10 34 01.529471 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1705 2
29 [CBM2000] QSO J2234+0000 abs 2.0662 DLA 22 34 08.99 +00 00 01.7           ~ 23 0
30 LBQS 2230-0015 QSO 22 34 08.9971883754 +00 00 01.695912538   18.09 17.39 17.3   ~ 107 0
31 [KKL2004] QSO J2340-0053 abs 1.3606 DLA 23 40 23.67 -00 53 27.1           ~ 2 0
32 QSO J2340-0053 QSO 23 40 23.6702895509 -00 53 26.997605159   18.26 17.93     ~ 74 0

    Equat.    Gal    SGal    Ecl

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2019.10.18-14:33:43

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