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Table 1
Stellar parameters for GJ 3779 and GJ 1265.
| Parameter | GJ 3779 | GJ 1265 | Ref. |
|---|---|---|---|
| Main identifiers and coordinates | |||
| Name | Ross 1020 | LP 819-052 | |
| Karmn | J13229 + 244 | J22137-176 | |
| α | 13:22:56.74 | 22:13:42.78 | 2MASS |
| δ | +24:28:03.4 | −17:41:08.2 | 2MASS |
| Spectral type and magnitudes | |||
| SpT | M4.0 V | M4.5 V | PMSU |
| G[mag] | 11.6266 ± 0.0008 | 12.0807 ± 0.0006 | Gaia DR2 |
| J[mag] | 8.728 ± 0.02 | 8.955 ± 0.03 | 2MASS |
| Kinematics | |||
| d[pc] | 13.748 ± 0.011 | 10.255 ± 0.007 | Gaia DR2 |
| μα cos δ [mas yr-1] | − 615.95 ± 0.13 | 856.89 ± 0.12 | Gaia DR |
| μδ [mas yr-1] | − 865.13 ± 0.10 | − 306.30 ± 0.11 | Gaia DR2 |
| Vr [km s-1] | − 19.361 | − 24.297 | Rei18 |
| Photospheric parameters | |||
| Teff [K] | 3324 ± 51 | 3236 ± 51 | This worka |
| log g | 5.05 ± 0.07 | 5.09 ± 0.07 | This worka |
| [Fe/H] | 0.00 ± 0.16 | − 0.04 ± 0.16 | This worka |
| Derived physical parameters | |||
| L[10−5 L⊙] | 867 ± 11 | 364 ± 5 | This work |
| R[R⊙] | 0.281 ± 0.010 | 0.192 ± 0.007 | This work |
| M[M⊙] | 0.27 ± 0.02 | 0.178 ± 0.018 | This work |
| Stellar rotation | |||
| v sin i [km s-1] | <2.0 | <2.0 | Rei18 |
| Prot [d] | 95 ± 5 | >70 | This work |
References. 2MASS: Skrutskie et al. (2006); PMSU: Hawley et al. (1996); Gaia DR2: Gaia Collaboration (2018); Rei18: Reiners et al. (2018b). (a) Estimated as in Passegger et al. (2018).
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