Table A.1.
Log and measurements of the spectropolarimetric observations of SN 2021yja.
| Date | MJD | Phasea | Days from explosionb | Exp. time | Pol.degreec | Pol. anglec | Telescope |
|---|---|---|---|---|---|---|---|
| (UT) | (days) | (days) | (days) | (seconds) | (%) | (degrees) | |
| 2021 − 10 − 02.24 | 59489.24 | –101.33 | +24.84 | 4 × 300 | 0.78(0.00)±0.03 | 112.1(−)±1.4 | VLT |
| 2021 − 11 − 11.26 | 59529.26 | –61.31 | +64.86 | 4 × 300 | 0.74(0.05)±0.03 | 112.9(11.1)±3.7 | VLT |
| 2021 − 12 − 03.09 | 59551.09 | –39.48 | +86.69 | 4 × 300 | 0.51(0.29)±0.03 | 116.5(14.3)±3.0 | VLT |
| 2022 − 01 − 06.10 | 59585.10 | –5.47 | +120.70 | 4 × 300 | 0.46(0.69)±0.04 | 142.5(4.2)±4.4 | VLT |
Notes. aRelative to t0 = 59590.57 (MJD), which is the estimated time of the end of the plateau phase. bRelative to t = 59464.40 (MJD), which is the estimated explosion time. cContinuum polarization degree and angle. The values in brackets for the polarization degree and angle refer to the continuum polarization after subtraction of the first component. The errors of the polarization degrees and angles represent the photon shot noise.
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