Table 1
Basic parameters of Gliese 49 (BD+61 195, Karm J01026+623).
| Parameter | Value | References |
|---|---|---|
| α (J2000) | 01h 02m 40.5s | (1) |
| δ (J2000) | +62° 20′ 44′′ | (1) |
| Sp. type | M1.5 V | (2, 3) |
| d | 9.856±0.003 pc | (1) |
| M | 0.515±0.019 M⊙ | (4) |
| R | 0.511±0.018 R⊙ | (4) |
| Teff | 3805±51 K | (4) |
| Lbol | 0.04938±0.00090 L⊙ | (4) |
| log g | 4.69±0.07 dex | (4) |
| [Fe/H] | 0.13±0.16 | (4) |
 |
−4.83±0.03 dex | (5) |
| pEW(Hα) | −0.044±0.087 Å | (6) |
| log LX∕Lbol | −4.70±0.09 dex | (7) |
| V | 9.56±0.02 mag | (8) |
| G | 8.66 mag | (1) |
| J | 6.230±0.021 mag | (9) |
| μα cos δ | +731.134±0.041 mas a−1 | (1) |
| μδ | +90.690±0.048 mas a−1 | (1) |
| Vr | −5.777±0.066 km s−1 | (10) |
| dv/dt | 12.304±0.004 cm s−1 a−1 | (1) |
| Prot | 18.4±0.7 d, 19.9±0.4 d | (5, 11) |
| v sin i | <2 km s−1 | (12) |
| HZ | 0.18–0.49 au, 39–172 d | (13) |
References. (1)Gaia Collaboration (2018), (2)Alonso-Floriano et al. (2015), (3)Maldonado et al. (2017), (4)Schweitzer et al. (2019), (5)Suárez Mascareño et al. (2018), (6)Schöfer et al. (2019), (7)González-Álvarez et al. (2019), (8)Høg et al. (1998), (9)Skrutskie et al. (2006), (10)this work, (11)Díez Alonso et al. (2019), (12)Reiners et al. (2018b), (13)recent Venus/early Mars habitable zones (HZ) following Kopparapu et al. (2013).
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