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WASP-7: a bright transiting-exoplanet ststem in the southern hemisphere

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Hellier, Coel, Anderson, D. R., Gillon, M., Lister, T. A., Maxted, P. F. L., Queloz, D., Smalley, B., Triaud, A. H. M. J., West, Richard G., Wilson, D. M. et al.

. (2009) WASP-7: a bright transiting-exoplanet ststem in the southern hemisphere. Astrophysical Journal Letters, Vol.690 (No.1). L89-L91. ISSN 2041-8213

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Official URL: http://dx.doi.org/10.1088/0004-637X/690/1/L89

Abstract

We report that a Jupiter-mass planet, WASP-7b, transits the V = 9.5 star HD 197286 every 4.95 d. This is the brightest discovery from the WASP-South transit survey so far and is currently the brightest transiting-exoplanet system in the southern hemisphere. WASP-7b is among the densest of the known Jupiter-mass planets, suggesting that it has a massive core. The planet mass is 0.96(-0.18)(+0.12) M-Jup, the radius is 0.915(-0.040)(+0.046) R-Jup, and the density is 1.26(-0.21)(+0.25) rho(Jup) (1.67(-0.28)(+0.33) g cm(-3)).

Item Type:

Journal Article

Subjects:

Q Science > QB Astronomy

Divisions:

Faculty of Science > Physics

Journal or Publication Title:

Astrophysical Journal Letters

Publisher:

Institute of Physics Publishing Ltd.

ISSN:

2041-8213