Table 1
Properties of GQ Lup A and B.
| Parameter | Value | References |
|---|---|---|
| GQ Lup A | ||
| Spectral type | K7Ve | 1 |
| AV (mag) | 0.4 ± 0.2 | 2 |
| log(L / L⊙) | 0.0 ± 0.1 | 3, 4 |
| Teff (K) | 4300 ± 50 | 3, 4 |
| Radius | 1.7 ± 0.2 R⊙ | 3 |
| Mass | 1.05 ± 0.07 M⊙ | 3, 4, 5, 6 |
| log Ṁ (M⊙ yr−1) | −9 to −7 | 3, 7 |
| log 𝑔 | 3.7 ± 0.2 | 3, 4 |
| Inclination (°) | 27 ± 5 | 8 |
| υ sin(i) (km s−1) | 5±1 | 3, 9 |
| 5.37 ± 0.05 | This work | |
| Rotation Period (d) | 8.45 ± 0.20 | 8 |
| GQ Lup B | ||
| Separation (″) | 0.721 ± 0.003 | 7 |
| PA (°) | 277.6 ± 0.4 | 7 |
| Spectral type | M9 | 10 |
| AV (mag) | ≈2.3 | 10, 11, 14 |
| log(L/L⊙) | −2.47 ± 0.28 | 3, 4 |
| Teff (K) | 2300−2700 | 3, 4, 10, 14 |
| Radius | 3.5−4.5 RJup | 3, 10, 11, 14 |
| Mass | −10−40 MJup | 3, 4, 5, 6, 12, 13 |
| log 𝑔 | 4.0 ± 0.5 | 3, 4, 10 |
 |
This work | |
| υ sin(i) (km s−1) |  |
4, 9 |
| 5.56 ± 0.02 | This work | |
Notes. (1) Herbig (1962), (2) Batalha et al. (2001), (3) Donati et al. (2012), (4) Lavigne et al. (2009), (5) Neuhäuser et al. (2008), (6) Marois et al. (2007), (7) Wu et al. (2017), (8) Broeg et al. (2007), (9) Schwarz et al. (2016), (10) Stolker et al. (2021), (11) Cugno et al. (2024), (12) McElwain et al. (2007), (13) Seifahrt et al. (2007), (14) Demars et al. (2023).
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