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Table 1.
Spectroscopic data.
| Epoch | Date | Image | BEL | Facility | Reference |
|---|---|---|---|---|---|
| 1 | 13-05-2007 | A, B | C IV | UH88 | Inada et al. (2009) |
| 2a | 16-03-2012 | A | Lyα, Si IV, C IV, C III], Mg II | SDSS | Dawson et al. (2013) |
| 2b | 29-03-2012 | B | Lyα, Si IV, C IV, C III] | SDSS | Dawson et al. (2013) |
| 3 | 13-04-2013 | A, B | C IV, C III], Mg II | GTC | Shalyapin & Goicoechea (2014) |
| 4 | 27-03-2014 | A, B | C IV, C III], Mg II | GTC | Goicoechea & Shalyapin (2016) |
| 5 | 20-05-2014 | A, B | Lyα, Si IV, C III], C IV | GTC | Goicoechea & Shalyapin (2016) |
| 6 | 18-02-2016 | A, B | C IV | HST | Lusso et al. (2018) |
| 7 | 06-04-2017 | A, B | Lyα, Si IV, C IV, C III], Mg II | VLT | Shalyapin et al. (2021) |
Notes. UH88: University of Hawaii 88″ Telescope; GTC: Gran Telescopio CANARIAS; HST: Hubble Space Telescope; SDSS: Sloan Digital Sky Survey; VLT: Very Large Telescope.
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