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Table 8
Physical properties of the WASP-21 system obtained in this work and compared with those found in literature.
| This work (final) | Bouchy et al. (2010) | Barros et al. (2011) | Southworth (2012) | |
|
|
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| MA (M⊙) | 0.890 ± 0.071 ± 0.035 | 1.01 ± 0.03 | 0.86 ± 0.04 | 0.98 ± 0.12 ± 0.07 |
| RA (R⊙) | 1.136 ± 0.049 ± 0.015 | 1.06 ± 0.04 |
|
1.186 ± 0.081 ± 0.028 |
| log gA (cgs) | 4.277 ± 0.025 ± 0.006 | 4.39 ± 0.03 | 4.29 ± 0.02 | 4.281 ± 0.031 ± 0.010 |
| ρA (ρ⊙) | 0.607 ± 0.048 | 0.84 ± 0.09 | 0.65 ± 0.05 | 0.587 ± 0.061 |
| Mb (Mjup) | 0.276 ± 0.018 ± 0.007 | 0.300 ± 0.011 | 0.27 ± 0.01 | 0.295 ± 0.027 ± 0.014 |
| Rb ( RJup) | 1.162 ± 0.052 ± 0.015 | 1.07 ± 0.06 |
|
1.263 ± 0.085 ± 0.029 |
| gb (ms-2) | 5.07 ± 0.35 | − | 5.13 ± 0.23 | 4.58 ± 0.45 |
| ρb (ρjup) | 0.165 ± 0.018 ± 0.002 | 0.24 ± 0.05 |
|
0.137 ± 0.021 ± 0.003 |
| Teq (K) | 1333 ± 28 | − | − | 1340 ± 32 |
| Θ | 0.0267 ± 0.0015 ± 0.0004 | − | − | 0.0245 ± 0.0019 ± 0.0006 |
| a (AU) | 0.0499 ± 0.0013 ± 0.0007 |
|
0.0494 ± 0.0009 | 0.0516 ± 0.0020 ± 0.0012 |
| Age (Gyr) | − | 12 ± 5 | 12 ± 2 | − |
Notes. The first error given in our, and Southworth’s results is referred to the statistical errors whereas the second refers to the systematic uncertainties.
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