Table 1.
X-shooter observations.
| Name | Epoch | Epoch | Airmass | Airmass | Seeing | Exposure | Rotation | S/N | SDSS r |
|---|---|---|---|---|---|---|---|---|---|
| (Date) | (MJD) | start | end | time (s) | (°) | (AB mag) | |||
| SP0 | 2017-05-28 | 57901.206 | 1.453 | 1.231 | 1.05 | 235 | 0 | 13 | 18.448 |
| SP1 | 2017-06-19 | 57923.214 | 1.156 | 1.080 | 1.21 | 235 | 40 | 13 | 18.457 |
| SP2 | 2019-11-25 | 58812.027 | 1.636 | 2.106 | 1.27 | 750 | 10 | 24 | 18.188 |
| SP3 | 2021-05-05 | 59339.368 | 1.096 | 1.065 | 0.94 | 750 | 50 | 17 | 18.528 |
Notes. Columns: (1) spectrum name; (2) observation date; (3) observation date in modified Julian date (MJD); (4) airmass at the beginning of the observation; (5) airmass at the end of the observation; (6) DIMM seeing during the observation; (7) exposure time in seconds; (8) slit rotation as measured with respect to the first spectrum, SP0; (9) signal-to-noise ratio measured from the featureless region between 5300–5400 Å; (10) SDSS magnitudes obtained from the flux calibrated acquisition images.
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