Table 1.
Quasar name, redshift of the quasar (zQSO), redshift of the ESDLA (zabs), column density (in logscale) of H I and H2, dust content measured in the ESDLA (E(B − V)), metallicity relative to solar (in [M/H], where M represents the most undepleted neutral gas species), Δv90, Δv90(C IV), and column density (in logscale) of Si IIfor ESDLAs.
| Quasar | zQSO | zabs | N(H I) | N(H2) | E(B − V) | [M/H] | Δv90 | Δv90(C IV) | N(Si II) |
|---|---|---|---|---|---|---|---|---|---|
| SDSS J001743.8+130739.8 | 2.594 | 2.326 | 21.62 ± 0.03 | < 18.3 | 0.11 | −1.5 ± 0.09 | 120 | 430 | 16.01 ± 0.13 |
| SDSS J002503.0+114547.8 | 2.961 | 2.304 | 21.92 ± 0.09 | ∼20 | 0.19 | −0.53 ± 0.11 | 240 | – | 16.67 − 17.18 (a) |
| SDSS J114347.2+142021.6 | 2.583 | 2.323 | 21.64 ± 0.06 | 18.3 ± 0.1 | 0.08 | −0.8 ± 0.06 | 130 | – | 16.30 ± 0.03 |
| SDSS J125855.4+121250.2 | 3.055 | 2.444 | 21.9 ± 0.03 | < 18.3 | 0.02 | −1.43 ± 0.04 | 100 | 270 | 16.10 ± 0.04 |
| SDSS J134910.4+044819.9 | 3.353 | 2.482 | 21.8 ± 0.01 | < 18.1 | 0.03 | −1.35 ± 0.06 | 60 | – | 16.47 − 17.24 (a) |
| SDSS J141120.5+122935.9 | 2.713 | 2.545 | 21.83 ± 0.03 | < 15.9 | 0.03 | −1.59 ± 0.08 | 50 | 220 | 16.07 ± 0.18 |
| SDSS J151349.5+035211.6 | 2.68 | 2.464 | 21.83 ± 0.01 | 21.31 ± 0.01 | 0.13 | −0.84 ± 0.23 | 90 | 200 | 16.92 ± 0.24 |
| SDSS J214043.0−032139.2 | 2.479 | 2.339 | 22.41 ± 0.03 | 20.13 ± 0.07 | 0.04 | −1.52 ± 0.08 | 70 | – | 16.04 − 17.31 (a) |
| SDSS J223251.0+124225.3 | 2.299 | 2.23 | 21.75 ± 0.03 | 18.56 ± 0.02 | 0.004 | −1.48 ± 0.05 | 75 | 320 | 15.69 − 17.23 (a) |
| SDSS J224621.1+132821.3 | 2.514 | 2.215 | 21.73 ± 0.03 | < 16.3 | < 0.004 | −1.84 ± 0.1 | 65 | 230 | 15.63 ± 0.21 |
| SDSS J232207.3+003349.0 | 2.693 | 2.477 | 21.58 ± 0.03 | < 16.0 | < 0.004 | −1.71 ± 0.13 | 40 | 140 | 15.47 ± 0.06 |
Notes. Δv90 is derived from unsaturated transitions of singly ionised species, such as Ni II and Zn II. All data are taken from Ranjan et al. (2020) (and references therein), except for Δv90(C IV) and N(Si II), which is calculated in this work.
Taking into account the effects of saturation and blends, we provide revised estimates of N(Si II) here. See Sect. 4.8 for discussion.
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