Table 1
Sample of strong Mg ii systems (Wr(Mg iiλ2796) ≥ 1 Å) observed with the GBT, GMRT and WSRT.
| Quasar | zem | zabs | Wr(Mg iiλ2796) | Wr(Mg iiλ2803) | Wr(Mg iλ2852) | Wr(Fe iiλ2600) | Flux | Mor. |
| (Å) | (Å) | (Å) | (Å) | (mJy/beam) | ||||
|
|
||||||||
| Systems with 21-cm absorption spectra | ||||||||
| J045703−232452 | 1.003 | 0.8922 | 2.20 ± 0.02 | 1.90 ± 0.02 | 0.61 ± 0.02 | 1.87 ± 0.02 | 1640 | C† |
| J080036+501044 | 1.615 | 1.4146 | 1.94 ± 0.04 | 1.70 ± 0.04 | 0.45 ± 0.05 | 1.26 ± 0.05 | 113.9 | C |
| J081710+235223 | 1.732 | 1.3060 | 1.70 ± 0.13 | 1.53 ± 0.13 | 0.80 ± 0.15 | 1.38 ± 0.17 | 210.4 | C |
| J093035+464408 | 2.033 | 0.6216 | 3.18 ± 0.14 | 2.87 ± 0.14 | 1.21 ± 0.14 | 2.44 ± 0.13 | 313.9 | C |
| J095631+404628 | 1.510 | 1.3237 | 5.02 ± 0.37 | 4.19 ± 0.35 | 2.43 ± 0.36 | 1.97 ± 0.57 | 30.6 | R |
| J100718+225126 | 2.308 | 0.5602 | 1.19 ± 0.32 | 1.89 ± 0.24 | 0.64 ± 0.27 | 1.03 ± 0.19 | 341.3 | C |
| J114856+525425 | 1.632 | 0.8306 | 2.77 ± 0.04 | 2.39 ± 0.05 | 0.76 ± 0.06 | 1.66 ± 0.05 | 95.6 | C |
| J121604+584333 | 1.454 | 0.7487 | 1.55 ± 0.12 | 1.44 ± 0.12 | 0.47 ± 0.12 | 0.97 ± 0.11 | 376.8 | R |
| J125227+442737 | 1.347 | 0.9112 | 1.39 ± 0.15 | 1.33 ± 0.14 | 0.36 ± 0.13 | 1.24 ± 0.14 | 248.7 | R |
| J132901+105304 | 1.933 | 0.6715 | 1.47 ± 0.18 | 1.45 ± 0.18 | <0.24 | 1.00 ± 0.25 | 111.2 | C? |
| J133335+164903 | 2.089 | 0.7448 | 1.80 ± 0.04 | 1.46 ± 0.04 | 0.18 ± 0.04 | 0.53 ± 0.05 | 409.1 | C |
| J140856−075227 | 1.500 | 1.2753 | 2.08 ± 0.05 | 1.90 ± 0.05 | 0.62 ± 0.05 | 1.53 ± 0.05 | 604.0 | C |
| J141030+614136 | 2.247 | 0.7596 | 1.31 ± 0.16 | 1.48 ± 0.16 | 0.57 ± 0.10 | 0.84 ± 0.19 | 116.1 | C |
| J150124+561949 | 1.467 | 1.2788 | 1.38 ± 0.10 | 1.02 ± 0.09 | 0.37 ± 0.10 | 0.72 ± 0.12 | 148.8 | C |
| J163638+211255 | 1.801 | 0.8000 | 2.26 ± 0.20 | 2.41 ± 0.21 | 0.53 ± 0.24 | 1.62 ± 0.20 | 365.8 | C |
| J203155+121941 | 1.215 | 1.1158 | 1.29 ± 0.05 | 1.16 ± 0.05 | 0.54 ± 0.05 | 1.12 ± 0.05 | 941.0 | R† |
| J212912−153841 | 3.268 | 0.6628 | 2.49 ± 0.003 | − | − | − | 589.7 | R† |
| Systems with VLBA image but no 21-cm absorption spectra | ||||||||
| J081534+330529 | 2.426 | 0.8515 | 2.67 ± 0.28 | 2.19 ± 0.31 | 0.55 ± 0.15 | 1.12 ± 0.27 | 327.9 | C |
| J110021+162914 | 3.380 | 0.8540 | 1.99 ± 0.11 | 1.64 ± 0.11 | 0.66 ± 0.12 | 1.08 ± 0.13 | 256.5 | C |
| J115734+163859 | 1.061 | 0.7624 | 1.19 ± 0.07 | 1.05 ± 0.07 | 0.25 ± 0.08 | 0.56 ± 0.07 | 734.3 | C |
| J121332+130720 | 1.139 | 0.7718 | 1.19 ± 0.08 | 1.10 ± 0.08 | 0.36 ± 0.09 | 0.81 ± 0.08 | 1281.0 | C |
| J130036+082802 | 1.090 | 0.8665 | 1.39 ± 0.08 | 1.07 ± 0.08 | 0.48 ± 0.10 | 0.78 ± 0.11 | 101.3 | C |
| J143009+104326 | 1.710 | 1.2431 | 1.64 ± 0.09 | 1.53 ± 0.09 | <0.10 | 0.64 ± 0.17 | 303.9 | C |
Notes. The systems for which no useful 21-cm absorption spectra could be obtained are also given. Listed from left to right are the names of the quasars, their emission redshifts, redshifts of the intervening Mg ii system, rest frame equivalent widths of the Mg iiλ2796, Mg iiλ2803, Mg iλ2852 and Fe iiλ2600 absorption lines, and 1.4 GHz peak flux densities of the quasars as determined from the FIRST or NVSS surveys. The last column specifies whether the quasar is compact (C) or resolved (R) at the FIRST resolution. The quasars with the deconvolved sizes ≤2′′ are classified as compact (White et al. 1997).
Not covered in FIRST. The flux densities for J0457−2324, J2031+1219 and J2129−1538 are taken from the NVSS. The morphology classification for J0457−2324 and J2129−1538 is based on the 1.4 GHz VLA images with the resolution of ~3′′ and ~1.4′′ respectively (Ulvestad et al. 1981; Neff & Hutchings 1990). More than 90% of the flux density of J0457−2324 is contained in an unresolved component whereas J2129−1538 exhibits a core-jet morphology with linear size of 4.6′′ and 95% of the total flux density in the core component. The quasar J2031+1219 is extended in the GMRT image at 610 MHz (resolution ~5′′) presented in Fig. 1.
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