Table 1
Compiled data for GCIRS 22.
| Parameter | C07 | T19 | AP17 | This work | Using C07 parameters |
|---|---|---|---|---|---|
| Mbol (mag) | -6.49 ± 0.42 | -6.27 ± 0.23 | |||
| Ks (mag) | 7.39 | 7.391 ± 0.024 | |||
| Mass (M⊙) | 10±2 | 7.7 ± 1.5 | |||
| Age (Myr) | 25 | 25 – 63 | |||
| Teff (K) | 3750± 150 | 3053 | 3271 | 3350± 150 | |
| log g (dex) | 0.2 ± 0.3 | 0.24 | 0.30 | -0.02 ± 0.15 | |
| ξ (km s−1) | 2.3 ± 0.1 | 1.76 | 1.71 | 2.53 ± 0.22 | |
| [Fe/H] (dex) | 0.1 ± 0.1 | 0.05 | -0.05 | -0.08 ± 0.17 | 0.04± 0.15 |
| [Mg/Fe] (dex) | 0.18 | -0.06 | -0.07 ± 0.50 | ||
| [Si/Fe] (dex) | 0.17 | -0.06 | -0.08 ± 0.20 | ||
| [Ca/Fe] (dex) “NLTE” | 0.06 ± 0.07 | 0.26 ± 0.06 | |||
| [Ca/Fe] (dex) “LTE” | 0.63 ± 0.1 | 0.04 | 0.40 ± 0.08 | 0.66 ± 0.06 |
Notes. The coordinates of GCIRS 22 are RA = 17:45:39.83, Dec = −29:00:53.90. C07 is data from Cunha et al. (2007), T19 is data obtained using The Payne (Ting et al. 2019), and AP17 is data from APOGEE DR17 (Abdurro’uf et al. 2022). Some uncertainties in T19 and AP17 are reported but they are not comparable to the uncertainties of C07 and this work, and thus are not reported here. In the last column, we analyse our spectrum assuming stellar parameters from Cunha et al. (2007).
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