Table 1.
Physical parameters of Betelgeuse obtained in this study.
| Date of observations | JD-2450000 (d) | Teff (K) | σ(Teff) | log g | σ(log g) | [Fe/H] | σ([Fe/H]) | Vmic (km s−1) |
|---|---|---|---|---|---|---|---|---|
| 06-04-2020 | 8945.6 | 3646 | 9 | 0.24 | 0.04 | 0.11 | 0.07 | 3 |
| 04-04-2020 | 8943.6 | 3611 | 7 | 0.17 | 0.04 | 0.12 | 0.15 | 3 |
| 19-03-2020 | 8927.6 | 3534 | 3 | 0.25 | 0.04 | 0.06 | 0.09 | 3 |
| 31-01-2020 | 8879.6 | 3476 | 4 | 0.22 | 0.04 | 0.12 | 0.12 | 3 |
| 14-02-2012 | 6702.6 | 3632 | 7 | 0.11 | 0.03 | 0.07 | 0.16 | 3 |
Julian date (JD-2450000), effective temperature (Teff), surface gravity (log g), metallicity ([Fe/H]), and microturbulent velocity (Vmic)) are presented. Date of observations is given in dd-mm-yyyy format. Uncertainty for Teff and log g (σ(Teff) and σ(log g)) is defined as the difference between the 84th and 50th percentile as the upper limit, and the difference between the 50th and 16th percentile as the lower limit. Uncertainty for [Fe/H] (σ([Fe/H])) is calculated as standard deviation. Source data are provided as a Source Data file.