Table 1
Literature and starsim parameters for ε Eridani, and AU Microscopii, and their planetary companions.
| Parameter | Unit | ε Eridani | AU Microscopii | ||||
|---|---|---|---|---|---|---|---|
| Literature value | Ref. | starsim | Literature value | Ref. | starsim | ||
| Right ascension RA | h:m:s | 03:32:55.84±0.12 | (1) | … | 20:45:09.532±0.017 | (1) | |
| Declination Dec | °:′:″ | −09:27:29.739±0.093 | (1) | … | −31:20:27.238±0.011 | (1) | |
| Age | Myr | 400–800 | (2) | … | 22±3 | (4) | |
| Distance | pc | 3.216±0.002 | (1) | … | 39.714±0.002 | (1) | |
| μα | mas a−1 | −974.76±0.16 | (1) | … | 281.319±0.022 | (1) | |
| μδ | mas a−1 | 20.88±0.I2 | (1) | … | −360.148±0.019 | (1) | |
| υ sin i | km s−1 | 2.4±0.5 | (3) | … | 9.3±1.2 | (5) | |
| Magnitude G | mag | 3.4658±0.003l | (1) | … | 7.8434±0.0029 | (1) | |
| Spectral type SpT | … | K2.0V | (6) | HARPS K5 mask | M1.0V | (16) | CARMENES M1.5 mask |
| Stellar mass M*v | M⊙ | 0.82±0.05 | (7) | 0.8–0.9 | 0.50±0.03 | (4) | 0.45–0.55 |
| 0.847±0.042 | (8) | ||||||
| Stellar radius R* | R⊙ | 0.74±0.01 | (7) | 0.65–0.75 | 0.75±0.03 | (4) | 0.7–0.8 |
| 0.702±0.035 | (8) | ||||||
| Effective temperature Teff | K | 5076±30 | (9) | 4900–5300 | 3700±100 | (4) | 3550–3850 |
| Surface gravity log g | dex | 4.30±0.08 | (10) | 4.5 (fixed) | 4.39±0.03 | (1) | 4.5 (fixed) |
| Metallicity [Fe/H] | … | −0.13±0.04 | (11) | 0.0 (fixed) | –0.12±0.11 | (17) | 0.0 (fixed) |
| Inclination i | ° | 60 | (12) | 30–90 | 90 | (18) | 60–90 |
| Rotation period Prot | day | 11.2 | (3) | 11–12.5 | 4.863±0.010 | (19) | 4.8–4.9 |
| Convective blueshift CB(*) | CB⊙ | ~0.3 | (14,15) | 0.0–0.5 | ~0.0 | (14,15) | 0.0–0.5 |
| Differential rotation dΩ(**) | dΩ⊙ | 1.3 | (3) | 0.1–4 | 3.0 | (20) | 0.5–5 |
| Spot temperature difference ΔΤ | K | 1080±670 | (13) | 250–1000 | 660±570 | (13) | 250–1000 |
| Minimum mass M sin i | M⊕ | 210 | (21) | … | 20; 11 | (22) | … |
| Orbital period | day | 2671 | (21) | … | 8.46; 18.86 | (22) | … |
| RV semi-amplitude | m s−1 | ~11 | … | … | ~6; ~8 | … | … |
Notes. (*)In units of the solar convective blueshift CB⊙ ~ −325 m s−1 (e.g. Löhner-Böttcher et al. 2018; Stief et al. 2019), (**)in units of the solar differential rotation dΩ⊙ = 3.15° day−1, assuming P⊙,min ~ 24.47 d, P⊙,max ~ 31.14 days, and dΩ⊙ = 360° 
(Beck 2000).
References. (1)Gaia Collaboration (2020),(2)Janson et al. (2015), (3)Fröhlich (2007), (4)Plavchan et al. (2020),(5)Torres et al. (2006), (6)Keenan & McNeil (1989), (7)Baines & Armstrong (2012), (8)Kervella et al. (2019), (9)Heiter et al. (2015), (10)Gonzalez et al. (2010), (11)Santos et al. (2004), (12)Quillen & Thorndike (2002) (13)following Herbst et al. (2021), (14)Liebing et al. (2021), (15)Meunier et al. (2016), (16)Keenan & McNeil (1989), (17)Gaidos et al. (2014), (18)Kalas et al. (2005) (19)Krist et al. (2005), (20)Klein et al. (2021), (21)Llop-Sayson et al. (2021), (22)Zicher et al. (2022).
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.