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Table 2
Revised fundamental properties of VY CMa.
| Parameter | Value | Reference |
|
|
||
| Distance (kpc) | 1.17 ± 0.08 | 1 |
| Bolometric flux (10-13 W/cm2) | 6.3 ± 0.3 | 2 |
| Rosseland angular diameter (mas) | 11.3 ± 0.3 | 3 |
| Rosseland radius (R⊙) | 1420 ± 120 | 4 |
| Effective temperature (K) | 3490 ± 90 | 5 |
| Spectral type | M4 (M3–M4.5) | 6 |
Luminosity (10 ) |
2.7 ± 0.4 | 7 |
| Initial mass (M⊙) | 25 ± 10 | 8 |
| Current mass (M⊙) | 17 ± 8 | 9 |
| Surface gravity (log g/cgs) | −0.6 ± 0.4 | 10 |
References. 1: Average of Choi et al. (2008) and Zhang et al. (2012); 2: Photometry from Smith et al. (2001) and IRAS fluxes; 3: this work; 4: 3 with 1; 5: 3 with 2; 6: 5 with van Belle et al. (2009); 7: 2 with 1; 8–10: 5 and 7 with evolutionary tracks from Ekström et al. (2012).
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