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Table 1

Properties of our target galaxies.

Source id1 RA (J2000) Dec (J2000) V (2) [4.5]3 Mask4 z spec 5 Quality6

26113 02:16:49.49 –05:14:41.01 24.73 ± 0.11 22.26 ± 0.10 2 ?
27497 02:16:37.35 –05:14:01.73 23.16 ± 0.10 22.56 ± 0.10 2 ?
30555 02:16:47.57 –05:12:33.97 23.45 ± 0.10 21.69 ± 0.10 2 2.640 a
31369 02:16:48.60 –05:12:11.51 24.45 ± 0.11 22.97 ± 0.10 2 0.569 em
33199 02:16:38.56 –05:11:30.00 24.94 ± 0.12 22.06 ± 0.10 2 ?
34743 02:16:38.62 –05:10:43.03 23.73 ± 0.11 22.02 ± 0.10 2 3.186 a
36718 02:16:50.81 –05:09:49.88 24.14 ± 0.11 21.35 ± 0.10 2 3.209 b
37262 02:16:51.08 –05:09:33.06 24.04 ± 0.11 23.37 ± 0.10 2 2.934 b
38729 02:16:39.44 –05:08:51.60 24.45 ± 0.11 23.00 ± 0.10 2 2.611 a
86032 02:17:19.47 –04:48:09.77 24.35 ± 0.11 21.86 ± 0.10 1 2.696 c
86588 02:17:29.47 –04:47:51.52 24.98 ± 0.12 22.25 ± 0.10 1 ?
89190 02:17:19.80 –04:46:22.59 24.99 ± 0.12 22.18 ± 0.10 1 ?
92077 02:17:33.44 –04:44:44.35 23.57 ± 0.10 23.07 ± 0.10 1 > 3.930 c
93334 02:17:32.06 –04:43:59.80 24.40 ± 0.11 23.14 ± 0.10 1 ?
94370 02:17:35.01 –04:43:18.91 24.40 ± 0.11 22.84 ± 0.10 1 2.076 em/c
94971 02:17:35.57 –04:42:59.59 24.87 ± 0.10 21.42 ± 0.10 1 3.100 em/a
95692 02:17:35.95 –04:42:33.64 22.57 ± 0.10 20.13 ± 0.10 1 3.284 a
96259 02:17:31.46 –04:42:10.74 25.00 ± 0.12 21.85 ± 0.10 1 ?

25668 02:16:47.93 –05:14:54.43 24.35 ± 0.11 24.18 ± 0.10 2 3.437 em
97267 02:17:34.97 –04:41:29.23 24.46 ± 0.11 22.76 ± 0.10 1 3.090 c

Notes. Properties of our target galaxies. Mask fillers that appeared to have zspec > 2.5 are included below the line.

(1)

ID number used;

(2)

V-band AB magnitude;

(3)

4.5 μm AB magnitude;

(4)

Mask number, mask 1 and 2 have been observed for 4 and 7 h, respectively;

(5)

spectroscopic redshift obtained from our FORS2 spectra;

(6)

redshift quality flag: (a) secure redshift, (b) very likely redshift but not completely secure, (c) plausible redshift but not secure, (em) redshift based on a single emission line.

(†)

Because we only see the Lyman α forest, we are unable to determine the redshift and can only give a lower limit, see also Sect. 3.2.

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