Table 2
Stellar parameters of Gl 486.
| Parameter | Value | Reference |
|---|---|---|
| Basic identifiers and data | ||
| Wolf | 437 | Wol19 |
| Gl | 486 | Gli69 |
| Karmn | J12479+097 | AF15, Cab16a |
| Sp. type | M3.5 V | PMSU |
| T (mag) | 8.8223 ± 0.0073 | ExoFOP-TESS(a) |
| Astrometry and kinematics | ||
| α (J2016.0) | 12:47:55.53 | Gaia EDR3 |
| δ (J2016.0) | +09:44:57.7 | Gaia EDR3 |
| µα cos δ (mas a−1) | −1008.267 ± 0.040 | Gaia EDR3 |
| µδ (mas a−1) | −460.034 ± 0.033 | Gaia EDR3 |
| ϖ (mas) | 123. 722 ± 0.033 | Gaia EDR3, Lin21 |
| d (pc) | 8.0827 ± 0.0021 | Gaia EDR3, Lin21 |
| γ (km s−1) | + 19.106 ± 0.013 | Sou18 |
 (m s−1 a −1) |
+0.2274 ± 0.0011 | This work |
| U (km s−1) | −20.6015 ± 0.0093 | This work |
| V (km s−1) | −39.8626 ± 0.0076 | This work |
| W (km s−1) | + 12.440 ± 0.012 | This work |
| Galactic population | Thin disc | This work |
| Fundamental parameters | ||
| θLDD (mas) | 0.390 ± 0.018 | This work |
| R* (R⊙) | 0.339 ± 0.015 | This work |
| M* (M⊙) | 0.333 ± 0.019 | This work |
| L* (10−6 L⊙) | 12120± 82 | This work |
| Teff (K) | 3291 ± 75 | This work |
| log gspec | 4.82 ± 0.12 | Mar21 |
| [Fe/H] | 0.15 0.13 | Mar21 (b) |
| Activity and age | ||
| v sin i* (km s−1) | <2.0 | Rei18 |
| Prot,phot (days) | 49.9 ± 5.5 | This work(c) |
| pEW(He i D3) (Å) | +0.098 ± 0.007 | Fuh20 |
| pEW(Hα) (Å) | +0.163 ± 0.016 | Fuh20 |
| pEW(Ca ii IRT1)(Å) | +0.609 ± 0.003 | Fuh20 |
| pEW(He i IR) (Å) | +0.046 ± 0.013 | Fuh20 |
| log R′HK |  |
This work (d) |
| 〈B〉 (G) | <240 | Rei22 |
| log Lx (erg s−1) | <26.62 | Ste13 |
| Age (Ga) | 1–8 | This work(e) |
Notes. Throughout the paper, we use the symbol ‘a’ for annus (year in Latin), the unit of time that is exactly 365.25 days (86 400 s): http://exoterrae.eu/annus.html. (a)See Table A.2 for multi-band photometry different from TESS T. (b)See Sect. 4.3 for an element abundance analysis. (c)See Sect. 4.2 for the Prot determination from ground photometry. (d)From data compiled by Perdelwitz et al. (2021).(e)Passegger et al. (2019) assumed a mean age of 5 Ga.
References. AF15: Alonso-Floriano et al. (2015); Cab16a: Caballero et al. (2016a); ExoFOP-TESS: https://exofop.ipac.caltech.edu/tess/; Fuh20: Fuhrmeister et al. (2020); Gaia EDR3: Gaia Collaboration (2021a); Gli69: Gliese (1969); Lin21: Lindegren et al. (2021); Mar21: Marfil et al. (2021); PMSU: Reid et al. (1995); Rei18: Reiners et al. (2018); Rei22: Reiners et al. (2022); Ste13: Stelzer et al. (2013); Sou18: Soubiran et al. (2018); Wol19: Wolf (1919).
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