Table 1
Stellar properties of the components of DS Tuc.
| Parameter | DS Tuc A | DS Tuc B | Ref. |
|---|---|---|---|
| α (2000) | 23:39:39.481 | 23:39:39.270 | 1 |
| δ (2000) | −69:11:44.709 | −69:11:39.495 | 1 |
| μα (mas yr−1) | 79.464 ± 0.074 | 78.022 ± 0.064 | 1 |
| μδ (mas yr−1) | − 67.440 ± 0.045 | − 65.746 ± 0.037 | 1 |
| RV (km s−1) | 8.0 ± 0.8 | 6.1 ± 0.1 | 2 |
| RV (km s−1) | 7.8815 ± 0.0081 (a) | – | 3 |
| RV (km s−1) | 7.20 ± 0.32 | 5.32 ± 0.65 | 1 |
| RV (km s−1) | 7.4 ± 0.2 | – | 4 |
| π (mas) | 22.6663 ± 0.0354 | 22.6504 ± 0.0297 | 1 |
| V (mag) | 8.469 ± 0.013 | 9.84 ± 0.01 | 5 |
| B − V (mag) | 0.693 ± 0.017 | 1.00 ± 0.01 | 5 |
| V − I (mag) | 0.77 ± 0.01 | 1.16 ± 0.01 | 2 |
| G (mag) | 8.3193 ± 0.0010 | 9.3993 ± 0.0014 | 1 |
| BP-RP (mag) | 0.8908 | 1.2769 | 1 |
| J2MASS (mag) | 7.122 ± 0.024 | 7.630 ± 0.058 | 6 |
| H2MASS (mag) | 6.759 ± 0.023 | 7.193 ± 0.034 | 6 |
| K2MASS (mag) | 6.676 ± 0.034 | 7.032 ± 0.063 | 6 |
| T (mag) | 7.771 ± 0.018 | 8.607 ± 0.030 | 7 |
| Spectral type | G6V | K3Ve | 2 |
| Teff (K) | 5542 ± 21 | 4653 ± 18 | 5 |
| Teff (K) |  |
 |
1 |
| log g | 4.60 ± 0.15 | – | 3 |
| [Fe/H] (dex) | − 0.08 ± 0.06 | – | 3 |
 |
− 4.166 ± 0.015 | – | 3 |
 |
− 4.09 | – | 8 |
| v sin i (km s−1) | 18.3 ± 1.8 | 14.6 ± 1.5 | 2 |
| v sin i (km s−1) | 15.5 ± 1.5 | – | 3 |
| Prot (d) | 2.85 ± 0.02 | – | 3 |
| log LX | 30.21 (b) | 3 | |
| log LX ∕Lbol | −3.35 (b) | 3 | |
| EW Li (mÅ) | 216 | 232 | 2 |
| Mass (M⊙) | 0.959 ± 0.031 (c) | 0.782 ± 0.022 (c) | 3 |
| Radius (R⊙) | 0.872 ± 0.027 (c) | 0.769 ± 0.033 (c) | 3 |
| Radius (R⊙) |  |
 |
1 |
| Age (Myr) | 40 ± 5 | 9 | |
Notes. (a) Offline HARPS DRS (see Sect. 4.1). (b)A+B. (c) Derived using the PARAM web interface (da Silva et al. 2006).
References. 1. Gaia Collaboration (2018); 2. Torres et al. (2006); 3. this paper; 4. Nordström et al. (2004); 5. Pecaut & Mamajek (2013); 6. Skrutskie et al. (2006); 7. Stassun et al. (2018); 8. Henry et al. (1996); 9. Kraus et al. (2014).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.