2000ApJS..130...37S

Query : 2000ApJS..130...37S

2000ApJS..130...37S - Astrophys. J., Suppl. Ser., 130, 37-66 (2000/September-0)

A uniform analysis of the Lyα forest at z=0-5. I. The sample and distribution of clouds at z>1.7.

SCOTT J., BECHTOLD J. and DOBRZYCKI A.

Abstract (from CDS):

We present moderate-resolution data for 39 quasi-stellar objects (QSOs) at z~2 obtained at the Multiple Mirror Telescope. These data are combined with spectra of comparable resolution of 60 QSOs with redshifts greater than 1.7 found in the literature to investigate the distribution of Lyα forest lines in redshift and equivalent width. We find a value for γ, the parameter describing the number distribution of Lyα forest lines in redshift, of 1.88±0.22 for lines stronger than a rest equivalent width of 0.32 Å, in good agreement with some previous studies. The Kolmogorov-Smirnov test was applied to the data, and it is found that this single power law is a good fit over the relevant redshift ranges. Simulations of the Lyα forest were performed to determine the completeness of the line lists and to test how well the analysis recovers the underlying line statistics, given this level of completeness.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Quasars: Absorption Lines

Simbad objects: 41

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Number of rows : 41
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 LBQS 0006+0200 QSO 00 09 31.4293964544 +02 17 07.303408440   17.96 17.60     ~ 23 0
2 LBQS 0027+0149 QSO 00 29 52.1116445568 +02 06 06.197335020   17 18.9     ~ 50 0
3 QSO B0037-018 QSO 00 40 18.2481220896 -01 37 24.291341616     18     ~ 21 0
4 PHL 868 QSO 00 52 02.4056270064 +01 01 29.270570160   17.87 17.67     ~ 116 0
5 4C 25.05 Bla 01 26 42.79263357 +25 59 01.3001559     17.50 17.86   ~ 177 1
6 UM 675 BLL 01 52 27.3261958536 -20 01 07.045348584     17.4     ~ 99 0
7 QSO B0153+744 BLL 01 57 34.9650498168 +74 42 43.225049844   16 16.0 16.7   ~ 217 1
8 4C -03.07 Bla 02 28 53.2110624600 -03 37 37.123953384   17.03 16.96 16.8   ~ 162 1
9 QSO B0348+061 QSO 03 51 16.5651050784 +06 19 14.313809028     17.6     ~ 50 0
10 QSO B0400+258 Bla 04 03 05.58608082 +26 00 01.5027775     18 19.00   ~ 220 1
11 6C 074750+612020 QSO 07 52 11.2889 +61 12 32.907     20.9     ~ 14 1
12 4C 71.07 Bla 08 41 24.36528508 +70 53 42.1730435     17.30 16.8   ~ 818 1
13 LB 8755 QSO 08 50 51.8060927808 +15 22 15.118839444   18.02 17.93     ~ 96 1
14 QSO B0936+3653 QSO 09 39 35.1198050472 +36 40 00.929644968   18.54 18.32     ~ 39 0
15 Ton 1125 QSO 09 55 37.9390883544 +33 35 03.940465164     17 16.72   ~ 67 1
16 US 1146 QSO 09 58 45.4279639176 +47 03 24.437850300   18.01 17.87     ~ 37 0
17 QSO J0958+1202 QSO 09 58 52.1994218616 +12 02 45.038331528   18.24 17.91     ~ 129 0
18 CSO 38 QSO 10 11 55.5947671920 +29 41 41.595330804   16.28 16.05     ~ 117 0
19 QSO B1207+399 QSO 12 10 10.2201458040 +39 39 36.096994404   17.59 17.37     ~ 41 0
20 LBQS 1210+1731 QSO 12 13 03.0135468360 +17 14 23.237180160   18.21 18.03     ~ 91 0
21 Ton 621 QSO 12 33 55.5213281640 +29 07 49.047932640   17.19 16.92     ~ 41 0
22 QSO B1323-1042 QSO 13 26 00.0662936640 -10 57 05.646262824     17.0     ~ 11 0
23 QSO J1331+4101 QSO 13 31 41.1396131064 +41 01 58.778510304   17.52 17.41     ~ 111 0
24 QSO B1337+285 QSO 13 40 04.9509312960 +28 16 53.237375616   17.45 17.15     ~ 16 0
25 QSO B1346-036 QSO 13 48 44.0081711976 -03 53 24.502770168   17.33 17.27     ~ 59 0
26 QSO B1358+1134 QSO 14 00 39.0049622832 +11 20 22.407726804   17.6 17.6     ~ 34 0
27 QSO B1406+492 QSO 14 08 28.5422992248 +49 02 22.124437872   18.27 18.05     ~ 36 0
28 QSO B1408+009 QSO 14 11 23.5101194784 +00 42 53.009872056   18.41 18.26     ~ 51 1
29 Mrk 679 QSO 14 23 26.0580611328 +32 52 20.361564516   16.99 16.70     ~ 117 0
30 QSO B1422+2309 BLL 14 24 38.0938 +22 56 00.587   16.77 15.84 14.79   ~ 464 1
31 [PBW92] 1422+231 gLS 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 359 0
32 8C 1435+638 Bla 14 36 45.8021325144 +63 36 37.866905244   17.06 16.86 16.23   ~ 219 1
33 QSO B1603+3820 QSO 16 04 55.3999673952 +38 12 01.628642808   16.37 15.99     ~ 60 0
34 QSO B1604+290 QSO 16 06 55.9495230864 +28 55 19.139992680     17.0     ~ 34 0
35 QSO J1716+5328 QSO 17 16 35.5677616080 +53 28 15.827676888   16.30 16.48     ~ 70 0
36 QSO B2134+0028 Bla 21 36 38.58632232 +00 41 54.2128562   17.30 17.08 17.02   ~ 580 2
37 4C 24.61 QSO 22 54 09.34189937 +24 45 23.4229729     17.8     ~ 149 1
38 QSO J2257+0243 Bla 22 57 17.56309534 +02 43 17.5116538   18.04 17.96 18.45   ~ 165 1
39 QSO B2310+385 Bla 23 12 58.7940202248 +38 47 42.657287928     17.5     ~ 46 1
40 QSO B2320+079 Bla 23 22 36.08945020 +08 12 01.5936505   17.6   18.2   ~ 85 1
41 QSO B2329-0204 QSO 23 31 36.3387898824 -01 48 07.050139992   17.5 17.0     ~ 24 0

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