Abstract
We report on the discovery of WASP-37b, a transiting hot Jupiter orbiting an m $_v$ = 12.7 G2-type dwarf, with a period of 3.577469 plusmn 0.000011 d, transit epoch T $_0$ = 2455338.6188 plusmn 0.0006 (HJD; dates throughout the paper are given in Coordinated Universal Time (UTC)), and a transit duration 0.1304$^+0.0018$ $_-0.0017$ d. The planetary companion has a mass M $_p$ = 1.80 plusmn 0.17 M $_J$ and radius R $_p$ = 1.16$^+0.07$ $_-0.06$ R $_J$, yielding a mean density of 1.15$^+0.12$ $_-0.15$ $$_J$. From a spectral analysis, we find that the host star has M $_sstarf$ = 0.925 plusmn 0.120 M $_sun$, R $_sstarf$ = 1.003 plusmn 0.053 R $_sun$, T $_eff$ = 5800 plusmn 150 K, and [Fe/H] = -0.40 plusmn 0.12. WASP-37 is therefore one of the lowest metallicity stars to host a transiting planet.
Original language | English |
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Pages (from-to) | 8 |
Number of pages | 1 |
Journal | The Astronomical Journal |
Volume | 141 |
DOIs | |
Publication status | Published - 1 Jan 2011 |
Keywords
- planetary systems, stars: individual: WASP-37 GSC 00326-00658, techniques: photometric, techniques: spectroscopic