Table 1
Summary of Betelgeuse’s parameters.
| Parameter | Value | Refs. |
|
|
||
| Mass (M∗) | 11.6 , 15–20 M⊙ |
[1, 2] |
| Temperature (T∗) | 3300 K | [2] |
| Radius (R∗) | 950–1200 R⊙ | [2] |
| Luminosity (L∗) | 0.9–1.5 × 105 L⊙ | [2] |
| Wind velocity (vw) | 17 ± 1 km s-1 | [3] |
| Mass-loss rate (Ṁw) | 2–4 × 10-6 M⊙ yr-1 | [4] |
| ONC ISM density (nH) | 0.3 cm-3 | [5] |
| ISM density (nH) | 1.0–1.9 cm-3 | [6] |
| Stellar velocity (v∗)a | 73–28 km s-1 | [6] |
| Stand-off distance (RSO) | (8.5 ± 1.9) × 1017 cm | [6] |
| Distance (D) | 197 ± 45 pc | [7] |
Notes.
References. (1) Neilson et al. (2011). (2) Smith et al. (2009) and references therein. (3) Bernat et al. (1979). (4) Noriega-Crespo et al. (1997). (5) Observed ISM density of the Orion Nebulae Complex (ONC), Frisch et al. (1990). (6) Ueta et al. (2008), bow shock fitting. (7) Harper et al. (2008).
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