| IVS --- | Note --- | |
|---|---|---|
| IVS B | 0023-354 | intervening absorption system at z_abs_=1.3167+/-0.0010 with lines of Fe II {lambda}{lambda}2586, 2600, Mg II {lambda}{lambda}2796, 2803, and Mg I {lambda}2852. Although the Mg II doublet is not resolved, the presence of Mg I and Fe II confirm the system. |
| IVS B | 0048+447 | two associated absorption systems are detected within the Mg II emission line: one at z_abs_=1.2568+/-0.0001 and the other, including Mg I {lambda}2852, at z_abs_=1.2715+/-0.0001. Their velocities relative to the Mg II emission line are -370 and +2300km/s, respectively. |
| IVS B | 0229+262 | a possible intervening C IV {lambda}{lambda}1548, 1550 doublet is detected at z_abs_=2.5261+/-0.0001. |
| IVS B | 0307-085 | very strong associated absorption in C IV {lambda}{lambda}1548, 1550, Si IV {lambda}{lambda}1393, 1402, N V {lambda}{lambda}1238, 1242, and Ly{alpha} {lambda}1215 at a redshift of z_abs_=3.2899+/-0.0005, consistent with zero velocity shift relative to emission. |
| IVS B | 0521-403 | probable intervening absorption system at z_abs_=0.6974+/-0.0001 based on Mg II {lambda}{lambda}2796, 2803 (blend) and Mg I {lambda}2852 lines. Spectral resolution is too low to separate the Mg II doublet, but the wavelength match is good. There are two further absorption lines at 5023 and 5997{AA} that could not be identified but may be additional blended Mg ii doublets based on their line widths. |
| IVS B | 0550-453 | intervening absorption system at z_abs_=0.6859+/-0.0001 based on lines of Fe II {lambda}{lambda}2344, 2382, 2586+2600 (blend) and Mg II {lambda}{lambda}2796, 2803 (blend). |
| IVS B | 0722-068 | broad emission from Fe ii multiplets both blueward and redward of H{beta} (see Figure 5). |
| IVS B | 0727-365 | permitted lines Mg II, H{gamma}, and H{beta} are displaced ~1200km/s to higher redshift relative to the forbidden lines; the overall mean redshift is given in Table1. |
| IVS B | 0838-573 | absorption line at 6237{AA} is a possible intervening Mg II doublet at z_abs_=1.2304. |
| IVS B | 0858-313 | broad emission from Fe II multiplets both blueward and redward of H{beta}; [O III] {lambda}5007 may be partly blended with Fe II {lambda}5018 (see Figure 5). |
| IVS B | 0917-354 | broad emission from Fe II multiplets both blueward and redward of H{beta}; [O III] {lambda}5007 may be partly blended with Fe II {lambda}5018 (see Figure 5). |
| IVS B | 1006-093 | probable blend of associated Mg II {lambda}{lambda}2796, 2803 absorption at z_abs_=1.1884+/-0.0001. |
| IVS B | 1219-457 | prominent broad absorption line in the blue wing of Mg II emission at z_abs_=1.034 corresponding to an outflow velocity of ~2600km/s. |
| IVS B | 1228-352 | absorption line at 4151{AA} is a possible intervening Mg II doublet at z_abs_=0.4845. |
| IVS B | 1229-123 | self-absorption in C IV {lambda}{lambda}1548, 1550 is matched by absorption in Ly{alpha} {lambda}1215 at z_abs_=2.1054+/-0.0003. |
| IVS B | 1418-481 | intervening absorption system at z_abs_=1.0393+/-0.0001 is based on Mg II {lambda}{lambda}2796, 2803 and Mg I {lambda}2853. |
| IVS B | 1558-072 | bright quasar with an intervening absorption system at z_abs_=1.0787+/-0.0001 based on lines of Fe II {lambda}{lambda}2344, 2382, 2586, 2600 and Mg II {lambda}{lambda}2796, 2803. |
| IVS B | 1711-670 | (Figure 2) observed in poor seeing and we assume that the close star 2.5'' to the south-west is responsible for contamination by weak H{alpha} and H{beta} absorption at rest. Spectrum otherwise is featureless and the target is tentatively classified as a BL Lac object. |
| IVS B | 1712+530 | bright quasar with an intervening absorption system at z_abs_=1.5145+/-0.0010 based on lines of Fe II {lambda}{lambda}2586, 2600 and Mg II {lambda}{lambda}2796, 2803. |
| IVS B | 1810-745 | self-absorption near the center of C IV emission at z_abs_=2.246. |
| IVS B | 1813-497 | spectrum was obtained in poor seeing and is partly contaminated by light from a close star ~0.8 arcsec west of the quasar; see Figure 3. |
| IVS B | 1905-252 | intervening absorption system at z_abs_=1.3165+/-0.0001 based on Fe II {lambda}2600 and Mg II {lambd}{lambda}2796, 2803. |
| IVS B | 1957-423 | absorption system, probably associated, at z=0.9674+/-0.0001 in the extreme blue wing of Mg II emission, based on Mg II {lambda}{lambda}2796, 2803 and Fe II {lambda}2600; the blueshift is ~3200km/s. |
| IVS B | 2029-215 | an FeLoBAL quasar with very strong broad absorption and emission, predominantly in Fe II; see Section 4.3 and Figure 6. |
| IVS B | 2036-034 | intervening absorption system at z_abs_=1.2097+/-0.0010 based on lines of Fe II {lambda}{lambda}2344, 2382, 2586, 2600 and Mg II {lambda}{lambda}2796, 2803. |
| IVS B | 2044-188 | intervening absorption system at z_abs_=1.4905+/-0.0010 based on lines of Fe II {lambda}{lambda}2344, 2382, 2586, 2600, Mg II {lambda}{lambda}2796, 2803, and Mg I {lambda}2852. |
| IVS B | 2107-553 | the two absorption lines at 4747.2 and 4801.1{AA} cannot be identified with any known doublet or pair of lines. |
| IVS B | 2131-690 | very broad emission lines of C III] and Mg II. |
| IVS B | 2132-638 | prominent associated Mg II {lambda}{lambda}2796, 2803 absorption close to the peak of the emission line at z=1.5349+/-0.0001 with a blueshift of ~250km/s. |
| IVS B | 2155-475 | two absorption line systems: an intervening Mg II {lambda}{lambda}2796, 2803 system at z=0.7292+/-0.0044 and an associated system at z=1.7423+/-0.0010 based on Si II {lambda}1526, C IV {lambda}{lambda}1548, 1550 (blend), C I {lambda}1560, and Fe II {lambda}1608. |
| IVS B | 2257+313 | (Figure 2) featureless spectrum with a clear absorption system at z_abs_=0.9317+/-0.0001 defined by lines of Fe II {lambda}{lambda}2586, 2600 and Mg II {lambda}{lambda}2796, 2803, thereby setting a lower limit on the redshift of this BL Lac object. |
| IVS B | 2300+386 | two intervening absorption systems at z_abs_=1.0138+/-0.0001 and z_abs_=1.6005+/-0.0001 based solely on the Mg II {lambda}{lambda}2796, 2803 doublet. |
| IVS B | 2313-182 | low-luminosity radio galaxy with narrow [O II] {lambda}3727 and[O III] {lambda}{lambda}4959, 5007 emission on a predominantly stellar continuum with clear Ca II absorption. |