Table 1
Properties of 2MASSW J0746425+200032AB.
| Parameter | 2MASS J0746+20A | 2MASS J0746+20B |
|
|
||
| Rotation period (h) | 3.32 ± 0.15† | 2.07 ± 0.002 |
| v sin i (km s-1) | 19 ± 2 | 33 ± 3 |
| Equatorial velocity (km s-1) | 36 ± 4† | 56 ± 2† |
| Period ratio | 0.62  |
... |
| v sin i ratio |
|
... |
| Orbital period (yrs) | 12.71 ± 0.07 | 12.71 ± 0.07 |
| Semi-major axis (mas) | 237.3 |
|
| Inc.ORB (deg)‡ | 41.8 ± 0.5 | 41.8 ± 0.5 |
| Inc.EQ (deg)‡ | 32 ± 4† | 36 ± 4† |
|
|
||
| Age (log yrs) | 9.1 ± 0.1† | 9.1 ± 0.1† |
| Masstotal (M⊙) | 0.151 ± 0.003 | 0.151 ± 0.003 |
| Mass (M⊙) | 0.078 ± 0.004† | 0.073 ± 0.004† |
| Lithium? | No | No |
| Radius (RJ) | 0.99 ± 0.03† | 0.96 ± 0.02† |
| Gravity (log g) | 5.34 ± 0.02† | 5.34 ± 0.02† |
| Lbol (log L/L⊙) | −3.64 ± 0.02 | –3.77 ± 0.02 |
| Abs. mag (J) | 11.85 ± 0.04 | 12.36 ± 0.10 |
| Abs. mag (H) | 11.13 ± 0.02 | 11.54 ± 0.03 |
| Abs. mag (K) | 10.62 ± 0.02 | 10.98 ± 0.02 |
| References | 1, 3–5 | 1–5 |
Notes.
Rotation period discovered in this work; all other parameters derived here based on evolutionary models of Chabrier et al. (2000).
Inc.ORB is the system orbital inclination as measured by Konopacky et al. (2012), whereas Inc. EQ is the equatorial inclination of each component, calculated in this work.
Reference. (1) This work; (2) Berger et al. (2009); (3) Konopacky et al. (2010); (4) Bouy et al. (2004); (5) Chabrier et al. (2000).
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