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Table 1
Stellar parameters of the observed targets.
| Parameter | GJ 328 | GJ 649 | GJ 849 |
|---|---|---|---|
| Spectral type (a) | M0.0 | M1.0 | M3.5 (a) |
| Teff (K) (a) | 3897 ± 71 | 3734 ± 68 | 3467 ± 68 |
| [Fe/H] (dex) (a) | −0.06 ± 0.09 | −0.15 ± 0.09 | 0.09 ± 0.09 |
| Mass (M⊙) (a) | 0.65 ± 0.08 | 0.51 ± 0.05 | 0.45 ± 0.07 |
| Radius (R⊙) (a) | 0.63 ± 0.07 | 0.50 ± 0.05 | 0.45 ± 0.07 |
| log g (cgs) (a) | 4.64 ± 0.07 | 4.76 ± 0.04 | 4.80 ± 0.07 |
| log L*/L⊙ (a) | −1.08 ± 0.10 | −1.361 ± 0.087 | −1.59 ± 0.13 |
 |
−4.679 ± 0.031 | −4.925 ± 0.027 | −5.116 ± 0.031 |
| α (J2000) (c) | 08h :55m:07.6s | 16h:58m:08.8s | 22h:09m:40.3s |
| δ (J2000) (c) | +01°:32′:47.4″ | +25°:44′:39.0″ | −04º:38′:26.7″ |
| B – V (mag) | 1.30 | 1.48 | 1.50 |
| V (mag) | 9.997 | 9.655 | 10.366 |
| J (mag) (d) | 7.191 | 6.448 | 6.510 |
| H (mag) (d) | 6.523 | 5.865 | 5.90 |
| K (mag) (d) | 6.352 | 5.624 | 5.594 |
| π (mas) (c) | 48.740 ± 0.018 | 96.233 ± 0.024 | 113.445 ± 0.030 |
| µα (mas yr−1) (c) | 44.944 ± 0.020 | −115.314 ± 0.021 | 1132.583 ± 0.038 |
| µδ (mas yr−1) (c) | −1045.876 ± 0.013 | −508.087 ± 0.026 | −22.157 ± 0.037 |
References. (a)Maldonado et al. (2017); (b)Suárez Mascareño et al. (2016); (c)Gaia Collaboration et al. (2023); (d)Cutri et al. (2003).
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