WASP-37b: A 1.8 M-J EXOPLANET TRANSITING A METAL-POOR STAR
- Horne, K.
- Keenan, F. P.
- Lister, T. A.
- Maxted, P. F. L.
- Moulds, V.
- Moutou, C.
- Norton, A. J.
- Parley, N.
- Pepe, F.
- Queloz, D.
- Segransan, D.
- Smith, A. M. S.
- Stempels, H. C.
- Udry, S.
- Watson, C. A.
- West, R. G.
- Wheatley, P. J.
- Simpson, E. K.
- Faedi, F.
- Barros, S. C. C.
- Brown, D. J. A.
- Cameron, A. Collier
- Hebb, L.
- Pollacco, D.
- Smalley, B.
- Todd, I.
- Butters, O. W.
- Hebrard, G.
- McCormac, J.
- Miller, G. R. M.
- Santerne, A.
- Street, R. A.
- Skillen, I.
- Triaud, A. H. M. J.
- Anderson, D. R.
- Bento, J.
- Boisse, I.
- Bouchy, F.
- Enoch, B.
- Haswell, C. A.
- Hellier, C.
- Holmes, S.
DOIAbstract
International audienceWe 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 +/- 0.000011 d, transit epoch T-0 = 2455338.6188 +/- 0.0006 (HJD; dates throughout the paper are given in Coordinated Universal Time (UTC)), and a transit duration 0.1304(-0.0017)(+0.0018) d. The planetary companion has a mass M-p = 1.80 +/- 0.17 M-J and radius R-p = 1.16(-0.06)(+0.07) R-J, yielding a mean density of 1.15(-0.15)(+0.12) rho(J). From a spectral analysis, we find that the host star has M-star = 0.925 +/- 0.120 M-circle dot, R-star = 1.003 +/- 0.053 R-circle dot, T-eff = 5800 +/- 150 K, and [Fe/H] = -0.40 +/- 0.12. WASP-37 is therefore one of the lowest metallicity stars to host...
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