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Table 4
Stellar parameters from the spectra.
| Parameter | WASP-20 | WASP-28 |
|
|
||
| Star | CD-24 102 | 2MASS J23342787−0134482 |
| Constellation | Cetus | Pisces |
| RA (J2000) |
|
|
| Dec (J2000) |
|
|
| B | 11.17 | 12.50 |
| V | 10.68 | 12.03 |
| J | 9.70 | 11.08 |
| H | 9.42 | 10.76 |
| K | 9.39 | 10.73 |
| T eff | 6000 ± 100 K | 6100 ± 150 K |
| log g∗ | 4.40 ± 0.15 | 4.5 ± 0.2 |
| ξ t | 1.2 ± 0.1 km s-1 | 1.2 ± 0.1 km s-1 |
| vsinI∗ | 3.5 ± 0.5 km s-1 | 3.1 ± 0.6 km s-1 |
| [Fe/H] | −0.01 ± 0.06 | −0.29 ± 0.10 |
| [Si/H] | +0.03 ± 0.09 | −0.22 ± 0.10 |
| [Ca/H] | +0.09 ± 0.11 | −0.20 ± 0.12 |
| [Sc/H] | +0.03 ± 0.06 | ... |
| [Ti/H] | +0.09 ± 0.11 | −0.21 ± 0.07 |
| [V/H] | +0.09 ± 0.07 | ... |
| [Cr/H] | −0.04 ± 0.06 | ... |
| [Mn/H] | −0.01 ± 0.08 | ... |
| [Co/H] | −0.02 ± 0.08 | ... |
| [Ni/H] | 0.00 ± 0.06 | −0.28 ± 0.08 |
| log A(Li) | 2.40 ± 0.10 | 2.52 ± 0.12 |
| Spectral type | F9 | F8 |
| Age |  Gyr |
 Gyr |
| Distance | 210 ± 20 pc | 410 ± 70 pc |
Notes. We determined vsinI∗ from different subsets of spectra than the other parameters, as described in the text. The magnitudes are from the NOMAD catalogue (Zacharias et al., 2004). The spectral types are estimated from Teff using Table B.1 in Gray (2008).
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