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Table 1

Equivalent widths of metal absorption lines.

Transition W r log  N b eff
(Å) (cm-2) ( km s-1)

O iλ1302 0.90 ± 0.05

C iiλ1334 1.25 ± 0.04

Si iiλ1304 0.67 ± 0.05 16.0 ± 0.1a 41 ± 2
Si iiλ1526 0.92 ± 0.03
Si iiλ1808 0.37 ± 0.03

Fe iiλ1608 0.63 ± 0.04 15.5 ± 0.1a 39 ± 1
Fe iiλ1611 0.10 ± 0.04
Fe iiλ2249 0.25 ± 0.04
Fe iiλ2260 0.31 ± 0.05
Fe iiλ2344 1.24 ± 0.05
Fe iiλ2374 0.86 ± 0.05
Fe iiλ2382 1.37 ± 0.05
Fe iiλ2586 1.20 ± 0.07
Fe iiλ2600 1.35 ± 0.07

Ni iiλ1317 0.36 ± 0.06 14.2 ± 0.3b
Ni iiλ1370 0.09 ± 0.02
Ni iiλ1454 0.06 ± 0.03
Ni iiλ1709 0.12 ± 0.04
Ni iiλ1741 0.14 ± 0.04
Ni iiλ1751 0.18 ± 0.04

Mg iλ2852 0.61 ± 0.13 12.7 ± 0.1b

Cr iiλ2056 0.16 ± 0.04 13.8 ± 0.2b
Cr iiλ2066 0.23 ± 0.06

Zn ii+Mg iλ2026 0.26 ± 0.05 13.1 ± 0.1c
Zn ii+Cr iiλ2062 0.25 ± 0.04

Mn iiλ2576 0.23 ± 0.06 13.2 ± 0.1b
Mn iiλ2594 0.27 ± 0.04
Mn iiλ2606 0.18 ± 0.07

Ti iiλ1910 0.10 ± 0.03 13.2 ± 0.2 b

Mg iiλ2796 2.30 ± 0.12
Mg iiλ2803 2.10 ± 0.12

Al iiλ1670 0.89 ± 0.04

Al iiiλ1854 0.25 ± 0.03
Al iiiλ1862 0.23 ± 0.04

Si ivλ1393 0.42 ± 0.02
Si ivλ1402 0.26 ± 0.03

C ivλ1548 0.49 ± 0.03
C ivλ1550 0.34 ± 0.04

O viλ1031b 0.44 ±0.22
O viλ1037b 0.27 ± 0.15

Notes.

(a)

Derived using curve-of-growth analysis.

(b)

Derived from equivalent width in the optically thin regime.

(c)

Column density of Zn ii. See text for details.

(d)

Located in the Ly α forest.

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