Table 2
Comparison of key parameters of the three substellar companions with spin measurements.
| Proj. dist. | Mass | Radius | Age | Teff | vsin (i) or veq | Ref. | |
|
|
|||||||
| GQ Lup b | 100 au at 140 pc |
MJ
|
RJ
|
< 5 Myr | 26 50 ± 100 K |
km s-1
|
1, 2, 3 |
| 2M1207 b | 46 au at 59 pc | 5 ± 3 MJ | − | 8 Myr | 1230 ± 310 K | 17.3 ± 1.5 km s-1 ⋆ | 4, 5 |
| β Pic b | 6−9au at 19 pc | 11 ± 5 MJ | 1.65 ± 0.06 RJ | 21 ± 4 Myr |
K
|
25 ± 3 km s-1 | 6, 7, 8, 9 |
Reference. (1) Ginski et al. (2014b); (2) Seifahrt et al. (2007); (3) This work; (4) Song et al. (2006); (5) Zhou et al. (2016) (6) Lecavelier des Etangs & Vidal-Madjar (2016); (7) Binks & Jeffries (2014); (8) Currie et al. (2013); (9) Snellen et al. (2014).
The spin of 2M1207 b is the equatorial rotation velocity based on 
h from Zhou et al. (2016) and assuming R =1.5 RJ consistent with evolutionary models.
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