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Table 2.
Properties of the multi-component BAL in J1538+0855.
| BAL component | Epoch | BI | vmin | vmax | Δtrest |
|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) |
| A | 2006 | 330 |
50 460 | 53 490 | – |
| 2012 | 430 |
48 900 | 53 700 | 1.30 | |
| 2017 | 280 |
49 660 | 53 580 | 1.16 | |
| 2018 | 800 |
49 000 | 54 010 | 0.20 | |
| 2021 | – | – | – | 0.65 | |
| B | 2006 | 560 |
43 290 | 47 050 | – |
| 2012 | 200 |
43 940 | 46 450 | 1.30 | |
| 2017 | – | – | – | 1.16 | |
| 2018 | 110 |
43 950 | 46 010 | 0.20 | |
| 2021 | – | – | – | 0.65 | |
| C | 2006 | 620 |
38 160 | 40 920 | – |
| 2012 | 330 |
38 160 | 40 920 | 1.30 | |
| 2017 | – | – | – | 1.16 | |
| 2018 | 130 |
39 840 | 41 360 | 0.20 | |
| 2021 | – | – | – | 0.65 |
Notes. (1) Component of the BAL UFO; (2) observation epoch; (3) Balnicity index; (4) minimum and (5) maximum velocity of the BAL trough in km s−1; and (6) rest-frame time in years elapsed since the previous observation.
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