2004PASP..116..622P


Query : 2004PASP..116..622P

2004PASP..116..622P - Publ. Astron. Soc. Pac., 116, 622-633 (2004/July-0)

The Sloan Digital Sky Survey damped Lyα survey: data release 1.

PROCHASKA J.X. and HERBERT-FORT S.

Abstract (from CDS):

We present the results from an automated search for damped Lyα (DLA) systems in the quasar spectra of Data Release 1 from the Sloan Digital Sky Survey (SDSS-DR1). At z~2.5, this homogeneous data set has greater statistical significance than the previous two decades of research. We derive a statistical sample of 71 DLA systems (>50 previously unpublished) at z>2.1 and measure H I column densities directly from the SDSS spectra. The number of DLA systems per unit redshift is consistent with previous measurements, and we expect our survey has more than 95% completeness. We examine the cosmological baryonic mass density of neutral gas, Ωg, inferred from the DLA systems from the SDSS-DR1 survey and a combined sample drawn from the literature. Contrary to previous results, the Ωgvalues do not require a significant correction from Lyman limit systems at any redshift. We also find that the Ωgvalues for the SDSS-DR1 sample do not decline at high redshift, and the combined sample shows a (statistically insignificant) decrease only at z>4. Future data releases from SDSS will provide the definitive survey of DLA systems at z~2.5 and will significantly reduce the uncertainty in Ωgat higher redshift.

Abstract Copyright:

Journal keyword(s): Galaxies: Evolution - Galaxies: Intergalactic Medium - Galaxies: Quasars: Absorption Lines

VizieR on-line data: <Available at CDS (J/PASP/116/622): table1.dat>

Nomenclature: Table 2: [PH2004] QSO JHHMM+DDMM abs N.NNN N=71.

Simbad objects: 75

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Number of rows : 75
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 QSO J0035-0918 QSO 00 35 01.8855808652 -09 18 17.643286882   19.32 19.12     ~ 49 0
2 QSO J0122+1334 QSO 01 22 30.6211311710 +13 34 37.829164464   19.90 19.62     ~ 23 0
3 QSO J0127+1405 QSO 01 27 47.8095134218 +14 05 43.297117196   18.98 18.69     ~ 27 0
4 QSO J0139-0824 QSO 01 39 01.4056855981 -08 24 44.049404116   19.05 18.80     ~ 45 0
5 QSO J0211+1241 QSO 02 11 29.1656585402 +12 41 10.815578959   19.27 18.90     ~ 30 0
6 QSO J0225+0054 QSO 02 25 54.8567342982 +00 54 51.956690976   19.18 18.92     ~ 33 0
7 QSO J0234-0751 QSO 02 34 08.9712837188 -07 51 07.595862685   19.34 19.14     ~ 33 0
8 QSO J0255-0711 QSO 02 55 12.2884877671 -07 11 07.814047459   19.90 19.57     ~ 22 0
9 QSO J0255+0048 QSO 02 55 18.5794225645 +00 48 47.544465435   21.15 20.00     ~ 66 0
10 QSO J0338-0005 QSO 03 38 54.7825865898 -00 05 21.011196317   19.26 18.92     ~ 41 0
11 QSO J0745+3417 QSO 07 45 00.4711386878 +34 17 31.041060679   20.94 19.97     ~ 27 0
12 QSO J0755+4056 QSO 07 55 45.6073493172 +40 56 43.600543252   19.63 19.39     ~ 27 0
13 QSO J0801+4725 QSO 08 01 37.6875176280 +47 25 28.172561241   20.71 20.00     ~ 31 1
14 QSO J0812+32 QSO 08 12 40.6859427300 +32 08 08.578960457   18.16 17.75     ~ 92 0
15 QSO J0814+5029 QSO 08 14 35.1946906039 +50 29 46.372489535   20.04 19.07     ~ 39 0
16 QSO J0816+4823 QSO 08 16 18.9941435653 +48 23 28.464572691   20.77 19.89     ~ 39 1
17 QSO J0825+5127 QSO 08 25 35.1932009113 +51 27 06.380007937   19.77 18.92     ~ 41 0
18 QSO J0826+4513 QSO 08 26 12.5473073628 +45 13 55.650534619   21.16 20.04     ~ 25 0
19 QSO J0840+5255 QSO 08 40 39.2769517286 +52 55 04.830017448   19.70 19.42     ~ 24 0
20 QSO J0844+5153 QSO 08 44 07.3010479940 +51 53 10.971565831   19.99 19.60     ~ 33 0
21 QSO J0903+5353 QSO 09 03 01.2481760979 +53 53 15.719730585   18.77 18.56     ~ 25 0
22 QSO B0908+5633 QSO 09 12 23.0171553583 +56 21 28.633963141   19.88 19.44     ~ 29 0
23 QSO J0919+5512 QSO 09 19 55.4365049915 +55 12 05.629492146   19.51 19.19     ~ 24 0
24 QSO J0920+0228 QSO 09 20 14.4801904784 +02 28 03.762693579   19.79 19.44     ~ 24 0
25 QSO J0936+5811 QSO 09 36 57.1286772006 +58 11 19.050958498   19.39 19.19     ~ 22 0
26 QSO J0940+0232 QSO 09 40 08.4467386151 +02 32 09.120770213   19.88 19.55     ~ 25 0
27 [VV2006] J094454.3-004330 QSO 09 44 54.2455686585 -00 43 30.394739249   19.74 19.51     ~ 28 0
28 QSO J0947+6328 QSO 09 47 59.4144162225 +63 28 03.128281666   19.48 19.24     ~ 23 0
29 QSO J0952+0114 QSO 09 52 53.8427294079 +01 14 22.015839868   19.88 19.38     ~ 33 0
30 [VV2006] J100412.8+001257 QSO 10 04 12.8809265947 +00 12 57.575616956   19.09 18.86     ~ 32 0
31 QSO J1004+0018 QSO 10 04 28.4333563399 +00 18 25.646592134   18.83 18.61     ~ 42 0
32 [VV2006] J100553.3+001926 QSO 10 05 53.3390456456 +00 19 27.236567331   18.75 18.53     ~ 22 0
33 [VV2006] J101014.2-001016 QSO 10 10 14.2524869515 -00 10 15.289887982   19.42 19.16     ~ 31 0
34 [VV2006] J101748.9-003125 QSO 10 17 48.9008686133 -00 31 24.575908866   19.23 19.06     ~ 31 0
35 LBQS 1016-0039 QSO 10 18 59.9627669464 -00 54 20.326375376   18.79 18.68     ~ 38 0
36 [VV2006] J102606.7+011458 QSO 10 26 06.6699162907 +01 14 58.995280373   19.25 19.00     ~ 27 0
37 LBQS 1024+0030 QSO 10 26 36.9550082017 +00 15 30.323312359   18.72 18.53     ~ 36 0
38 [VV2006] J102650.4+010518 QSO 10 26 50.3882437093 +01 05 18.398629352   19.33 19.10     ~ 26 0
39 2QZ J104252.2+011736 QSO 10 42 52.3252019774 +01 17 36.592504913   18.93 18.69     ~ 35 0
40 QSO J1045+6543 QSO 10 45 43.5621539399 +65 43 21.411589424   19.83 19.54     ~ 22 0
41 QSO J1107-0112 QSO 11 07 49.1380642078 -01 12 30.775208912   20.11 19.61     ~ 22 0
42 QSO J1134+6717 QSO 11 34 41.2177034001 +67 17 51.405092627   18.68 18.46     ~ 23 0
43 QSO J1142-0012 QSO 11 42 20.2584512005 -00 12 16.286385982   18.75 18.65     ~ 32 0
44 QSO J1201+0116 QSO 12 01 44.3651168135 +01 16 11.738588370   18.09 17.74 17.4   ~ 53 2
45 QSO J1208+0043 QSO 12 08 47.6363150846 +00 43 21.669994768   19.19 18.91     ~ 27 0
46 QSO J1212+6759 QSO 12 12 38.4013925273 +67 59 20.583982028   18.75 18.57     ~ 25 0
47 QSO J1228-0104 BLL 12 28 48.2171001818 -01 04 14.551981126   18.60 18.41     ~ 40 0
48 QSO J1229-0209 QSO 12 29 24.1143594436 -02 09 14.660971115   20.45 19.69     ~ 25 0
49 QSO J1231-0153 QSO 12 31 31.8856249676 -01 53 50.711065102   21.02 20.04     ~ 23 0
50 QSO J1251+6616 QSO 12 51 31.7315436272 +66 16 27.095581974   20.04 19.67     ~ 22 0
51 QSO J1256-0338 QSO 12 56 59.7993419974 -03 38 13.906805851   19.60 19.27     ~ 21 0
52 QSO J1257-0111 QSO 12 57 59.2201572028 -01 11 30.313017823   20.90 19.82     ~ 37 0
53 QSO J1306-0135 QSO 13 06 43.0593634722 -01 35 52.694190645   19.36 19.02     ~ 27 0
54 QSO J1330+6519 QSO 13 30 00.9510867894 +65 19 48.007668210   19.44 19.11     ~ 23 0
55 QSO J1348+6413 QSO 13 48 11.2258420913 +64 13 48.271104341   21.31 20.03     ~ 21 0
56 QSO J1354+0158 QSO 13 54 40.1680657419 +01 58 27.640853793   19.98 19.59     ~ 25 0
57 QSO J1358+0058 QSO 13 58 28.7424135845 +00 58 11.381282630   21.10 20.17     ~ 30 0
58 QSO J1402+0117 QSO 14 02 00.8837516467 +01 17 51.709633179   19.31 18.96     ~ 27 0
59 QSO J1402+0146 QSO 14 02 48.0776380626 +01 46 34.051455663   20.89 19.64     ~ 28 0
60 QSO B1402+044 QSO 14 05 01.11981424 +04 15 35.8189966   19.86 19.53 19.22   ~ 176 1
61 QSO J1447+5824 QSO 14 47 52.4473770527 +58 24 20.235588719   18.81 18.56     ~ 26 0
62 QSO J1452+0154 QSO 14 52 43.6277452813 +01 54 30.769446306   21.02 19.83     ~ 26 0
63 2SLAQ J145329.53+002357.3 QSO 14 53 29.5340309343 +00 23 57.410087508   18.64 18.46     ~ 32 0
64 QSO J1503+0434 QSO 15 03 45.9520575244 +04 34 21.307008762   19.84 19.54     ~ 24 0
65 QSO J1506+0018 QSO 15 06 11.2284823455 +00 18 23.619842673   19.33 19.08     ~ 21 0
66 QSO J1639+4408 QSO 16 39 12.8820843420 +44 08 13.472838070   21.30 20.11     ~ 24 0
67 QSO J1640+4115 QSO 16 40 22.7860140658 +41 15 48.162169273 20.28 19.86 19.49     ~ 28 0
68 QSO J1658+3758 QSO 16 58 55.1945622759 +37 58 53.639602553   20.63 19.74     ~ 26 0
69 QSO J1712+5755 QSO 17 12 27.7467469405 +57 55 06.895396808   17.75 17.53     ~ 37 0
70 QSO J2036-0553 QSO 20 36 42.2912707736 -05 53 00.272244353   19.01 18.80     ~ 38 0
71 QSO J2059-0528 QSO 20 59 22.4273210225 -05 28 42.775512066   19.51 19.27     ~ 32 0
72 QSO J2100-0641 QSO 21 00 25.0296282307 -06 41 45.971328193   19.02 18.54     ~ 50 0
73 QSO J2151-0707 QSO 21 51 17.0014702744 -07 07 53.356471539   19.43 19.21     ~ 25 0
74 QSO B2303-0102 QSO 23 06 23.7022567710 -00 46 11.265889786   20.55 19.77     ~ 30 0
75 QSO B2348-0108 QSO 23 50 57.8764286186 -00 52 09.892906411   19.23 18.77 18.7   ~ 138 0

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2021.10.21-02:28:37

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