Table 1
Physical parameters.
| Parameter | Value | Uncertainty | Reference |
|
|
|||
| Direct measurements | |||
| mK(2013) | 7.31 | ± 0.07 | Fig. 5 |
| mH(2013) | 10.10 | ± 0.08 | Fig. 5 |
| ⟨mK⟩ | 6.8 | ± 0.1 | Fig. 5 |
| ⟨mH⟩ | 9.93 | ± 0.03 | Table 2 |
| P LT | 2850 | d | Fig. 5 |
| θUD(2013) | 1.076 | ±0.093 mas | Sect. 3.1 |
| P 0 | 470 | ±10 d | Sect. 3.2 |
| P LSP | 2620 | ±140 d | Sect. 3.2 |
| ⟨EW(CO)⟩ | 28 | ± 0.5 | Fig. 10 |
|
|
|||
| Indirect measurements | |||
| A K | 3.48 | ± 0.09 | 1 |
| A H/A K | 1.73 | ± 0.03 | 2 |
| R 0 | 8.33 | ±0.35 kpc | 3 |
| BCK | 2.84 | ± 0.15 | 4 |
| RUD(2013) | 960 | ± 92 R⊙ | Sect. 3.1 |
| ⟨Teff⟩ | 3600 | ±195 K | Table 3 |
| ⟨MK⟩ | −11.3 | ± 0.16 | Sect. 3.4 |
| ⟨MH⟩ | −10.7 | ± 0.2 | Sect. 3.4 |
| ⟨Mbol⟩ | −8.44 | ± 0.22 | Sect. 3.4 |
| MK(2013) | −10.77 | ± 0.15 | Sect. 3.4 |
| MH(2013) | −10.52 | ± 0.22 | Sect. 3.4 |
| Mbol(2013) | −7.93 | ± 0.21 | Sect. 3.4 |
| M | 22.5 | ± 2.5M⊙ | Sect. 3.5 |
| Age | 6.5–10 | Myr | Sect. 3.5 |
Notes. mK(2013), mH(2013): K- and H-band magnitudes measured in June and August 2013, respectively; ⟨mK⟩, ⟨mH⟩: baseline magnitudes; PLT: long-term period; θUD(2013): best-fit uniform-disk angular diameter from the July 2013 PIONIER data; P0, PLSP: fundamental and long secondary periods found from the H-band NACO data; ⟨EW(CO)⟩: average 12CO equivalent width from the SINFONI data; AK, AH/AK: K-band extinction correction and ratio of correction at H to K-band; R0: distance from the Sun to the GC; BCK: bolometric correction for Teff = 3600 K; ⟨Teff⟩: average effective temperature; RUD = (2013): uniform-disk physical radius from the 2013 PIONIER data (taking limb-darkening into account would yield a 4% higher value); Mbol(2013), ⟨Mbol⟩: 2013 and average bolometric magnitude; M: mass.
Reference. (1) Blum et al. (2003); (2) Nishiyama et al. (2009); (3) Gillessen et al. (2009); (4) Levesque et al. (2005).
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