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50 previously unpublished) at z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 - 2024 		#notes
1 QSO J0035-0918 QSO 00 35 01.8852012984 -09 18 17.640206928   19.32 19.12     ~ 56 0
2 QSO J0122+1334 QSO 01 22 30.6216681888 +13 34 37.827438312   19.90 19.62     ~ 28 0
3 QSO J0127+1405 QSO 01 27 47.8093639368 +14 05 43.292658408   18.98 18.69     ~ 32 0
4 QSO J0139-0824 QSO 01 39 01.4050523400 -08 24 44.045742600   19.05 18.80     ~ 52 0
5 QSO J0211+1241 QSO 02 11 29.1657227904 +12 41 10.824313344   19.27 18.90     ~ 34 0
6 QSO J0225+0054 QSO 02 25 54.8563961016 +00 54 51.953062608   19.18 18.92     ~ 38 0
7 QSO J0234-0751 QSO 02 34 08.9719223136 -07 51 07.588559304   19.34 19.14     ~ 39 0
8 QSO J0255-0711 QSO 02 55 12.2889367080 -07 11 07.802023128   19.90 19.57     ~ 25 0
9 QSO J0255+0048 QSO 02 55 18.5784341184 +00 48 47.540744316   21.15 20.00     ~ 82 0
10 QSO J0338-0005 QSO 03 38 54.7829436024 -00 05 21.006534876   19.26 18.92     ~ 47 0
11 QSO J0745+3417 QSO 07 45 00.4716704712 +34 17 31.053465096   20.94 19.97     ~ 31 0
12 QSO J0755+4056 QSO 07 55 45.6071116488 +40 56 43.602318924   19.63 19.39     ~ 36 0
13 QSO J0801+4725 QSO 08 01 37.6870069320 +47 25 28.171357680   20.71 20.00     ~ 38 1
14 QSO J0812+32 QSO 08 12 40.6859242632 +32 08 08.579336496   18.16 17.75     ~ 101 0
15 QSO J0814+5029 QSO 08 14 35.1945299352 +50 29 46.365896904   20.04 19.07     ~ 47 0
16 QSO J0816+4823 QSO 08 16 18.9961577208 +48 23 28.468011444   20.77 19.89     ~ 47 1
17 QSO J0825+5127 QSO 08 25 35.1937162776 +51 27 06.374726748   19.77 18.92     ~ 48 0
18 QSO J0826+4513 QSO 08 26 12.5455780920 +45 13 55.676758260   21.16 20.04     ~ 30 0
19 QSO J0840+5255 QSO 08 40 39.2782063200 +52 55 04.828067472   19.70 19.42     ~ 28 0
20 QSO J0844+5153 QSO 08 44 07.3001214144 +51 53 10.967613936   19.99 19.60     ~ 38 0
21 QSO J0903+5353 QSO 09 03 01.2476985648 +53 53 15.725958468   18.77 18.56     ~ 29 0
22 QSO B0908+5633 QSO 09 12 23.0160294288 +56 21 28.631525796   19.88 19.44     ~ 35 0
23 QSO J0919+5512 QSO 09 19 55.4370558096 +55 12 05.643720396   19.51 19.19     ~ 29 0
24 QSO J0920+0228 QSO 09 20 14.4789664656 +02 28 03.759675996   19.79 19.44     ~ 29 0
25 QSO J0936+5811 QSO 09 36 57.1290782640 +58 11 19.039053660   19.39 19.19     ~ 27 0
26 QSO J0940+0232 QSO 09 40 08.4472339224 +02 32 09.122320212   19.88 19.55     ~ 31 0
27 [VV2006] J094454.3-004330 QSO 09 44 54.2463979872 -00 43 30.403658424   19.74 19.51     ~ 34 0
28 7C 094411.80+634154.00 QSO 09 47 59.4153584376 +63 28 03.140918436   19.48 19.24     ~ 32 1
29 QSO J0952+0114 QSO 09 52 53.8407789936 +01 14 22.066303020   19.88 19.38     ~ 39 0
30 [VV2006] J100412.8+001257 QSO 10 04 12.8811549624 +00 12 57.570120288   19.09 18.86     ~ 38 0
31 QSO J1004+0018 QSO 10 04 28.4334619224 +00 18 25.643447244   18.83 18.61     ~ 48 0
32 [VV2006] J100553.3+001926 QSO 10 05 53.3392993104 +00 19 27.229384056   18.75 18.53     ~ 25 0
33 [VV2006] J101014.2-001016 QSO 10 10 14.2528168008 -00 10 15.289373712   19.42 19.16     ~ 36 0
34 [VV2006] J101748.9-003125 QSO 10 17 48.9004514016 -00 31 24.552706980   19.23 19.06     ~ 37 0
35 LBQS 1016-0039 QSO 10 18 59.9624626392 -00 54 20.325556944   18.79 18.68     ~ 43 0
36 [VV2006] J102606.7+011458 QSO 10 26 06.6698450976 +01 14 58.992194004   19.25 19.00     ~ 32 0
37 LBQS 1024+0030 QSO 10 26 36.9544372344 +00 15 30.319829136   18.72 18.53     ~ 40 0
38 [VV2006] J102650.4+010518 QSO 10 26 50.3881736112 +01 05 18.386202516   19.33 19.10     ~ 31 0
39 2QZ J104252.2+011736 QSO 10 42 52.3250362896 +01 17 36.591913032   18.93 18.69     ~ 40 0
40 QSO J1045+6543 QSO 10 45 43.5624819168 +65 43 21.415814112   19.83 19.54     ~ 27 0
41 QSO J1107-0112 QSO 11 07 49.1377885008 -01 12 30.775622364   20.11 19.61     ~ 27 0
42 QSO J1134+6717 QSO 11 34 41.2173066504 +67 17 51.402698232   18.68 18.46     ~ 30 0
43 QSO J1142-0012 QSO 11 42 20.2592086272 -00 12 16.282623132   18.75 18.65     ~ 37 0
44 QSO J1201+0116 QSO 12 01 44.3649782736 +01 16 11.740001304   18.09 17.74 17.4   ~ 65 2
45 QSO J1208+0043 QSO 12 08 47.6369209776 +00 43 21.662159304   19.19 18.91     ~ 32 0
46 QSO J1212+6759 QSO 12 12 38.4016442208 +67 59 20.579951760   18.75 18.57     ~ 30 0
47 QSO J1228-0104 BLL 12 28 48.2171709096 -01 04 14.548223316   18.60 18.41     ~ 45 0
48 QSO J1229-0209 QSO 12 29 24.1147608888 -02 09 14.654952072   20.45 19.69     ~ 30 0
49 QSO J1231-0153 QSO 12 31 31.8837527304 -01 53 50.707964256   21.02 20.04     ~ 28 0
50 QSO J1251+6616 QSO 12 51 31.7291608368 +66 16 27.098666508   20.04 19.67     ~ 25 0
51 QSO J1256-0338 QSO 12 56 59.7979266192 -03 38 13.904428992   19.60 19.27     ~ 24 0
52 QSO J1257-0111 QSO 12 57 59.2191767280 -01 11 30.304749804   20.90 19.82     ~ 43 0
53 QSO J1306-0135 QSO 13 06 43.0591078320 -01 35 52.695751704   19.36 19.02     ~ 32 0
54 QSO J1330+6519 QSO 13 30 00.9489655176 +65 19 48.009260280   19.44 19.11     ~ 28 0
55 QSO J1348+6413 QSO 13 48 11.2283597328 +64 13 48.262985760   21.31 20.03     ~ 25 0
56 QSO J1354+0158 QSO 13 54 40.1690168208 +01 58 27.637429044   19.98 19.59     ~ 29 0
57 QSO J1358+0058 QSO 13 58 28.7429028696 +00 58 11.361227268   21.10 20.17     ~ 35 0
58 QSO J1402+0117 QSO 14 02 00.8838607896 +01 17 51.715076100   19.31 18.96     ~ 30 0
59 QSO J1402+0146 QSO 14 02 48.0782861640 +01 46 34.056646428   20.89 19.64     ~ 34 0
60 QSO B1402+044 QSO 14 05 01.11981857 +04 15 35.8188818   19.86 19.53 19.22   ~ 193 1
61 QSO J1447+5824 QSO 14 47 52.4475929808 +58 24 20.225660940   18.81 18.56     ~ 32 0
62 QSO J1452+0154 QSO 14 52 43.6279551840 +01 54 30.767109984   21.02 19.83     ~ 31 0
63 2SLAQ J145329.53+002357.3 QSO 14 53 29.5346027496 +00 23 57.405454404   18.64 18.46     ~ 37 0
64 QSO J1503+0434 QSO 15 03 45.9516804984 +04 34 21.309518496   19.84 19.54     ~ 29 0
65 QSO J1506+0018 QSO 15 06 11.2290462096 +00 18 23.615863776   19.33 19.08     ~ 25 0
66 QSO J1639+4408 QSO 16 39 12.8823048048 +44 08 13.497255348   21.30 20.11     ~ 29 0
67 QSO J1640+4115 QSO 16 40 22.7868381552 +41 15 48.175537788 20.28 19.86 19.49     ~ 33 0
68 QSO J1658+3758 QSO 16 58 55.1944414536 +37 58 53.645245788   20.63 19.74     ~ 31 0
69 QSO J1712+5755 QSO 17 12 27.7465195944 +57 55 06.895257456   17.75 17.53     ~ 43 0
70 QSO J2036-0553 QSO 20 36 42.2919965400 -05 53 00.276303984   19.01 18.80     ~ 42 0
71 QSO J2059-0528 QSO 20 59 22.4274372096 -05 28 42.778157700   19.51 19.27     ~ 38 0
72 QSO J2100-0641 QSO 21 00 25.0301694552 -06 41 45.968177220   19.02 18.54     ~ 56 0
73 QSO J2151-0707 QSO 21 51 17.0008138464 -07 07 53.357903148   19.43 19.21     ~ 30 0
74 QSO B2303-0102 QSO 23 06 23.7015516000 -00 46 11.270129844   20.55 19.77     ~ 35 0
75 QSO B2348-0108 QSO 23 50 57.8771296800 -00 52 09.886281492   19.23 18.77 18.7   ~ 149 0

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