XO-5b: A Transiting Jupiter-sized Planet With A Four Day Period

Christopher J. Burke; P. R. McCullough; Jeff A. Valenti; Doug Long; Christopher M. Johns-Krull; P. Machalek; Kenneth A. Janes; B. Taylor; Michael L. Fleenor; Cindy N. Foote; Bruce L. Gary; Enrique Garcia-Melendo; J. Gregorio; T. Vanmunster

doi:10.1086/591497

arXiv · 0805.2399

XO-5b: A Transiting Jupiter-sized Planet With A Four Day Period

Christopher J. Burke·P. R. McCullough·Jeff A. Valenti·Doug Long·Christopher M. Johns-Krull·P. Machalek·Kenneth A. Janes·B. Taylor·Michael L. Fleenor·Cindy N. Foote·Bruce L. Gary·Enrique Garcia-Melendo·J. Gregorio·T. Vanmunster

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Abstract

The star XO-5 (GSC 02959-00729, V=12.1, G8V) hosts a Jupiter-sized, Rp=1.15+/-0.12 Rjup, transiting extrasolar planet, XO-5b, with an orbital period of P=4.187732+/-0.00002 days. The planet mass (Mp=1.15+/-0.08 Mjup) and surface gravity (gp=22+/-5 m/s^2) are significantly larger than expected by empirical Mp-P and Mp-P-[Fe/H] relationships. However, the deviation from the Mp-P relationship for XO-5b is not large enough to suggest a distinct type of planet as is suggested for GJ 436b, HAT-P-2b, and XO-3b. By coincidence XO-5 overlies the extreme H I plume that emanates from the interacting galaxy pair NGC 2444/NGC 2445 (Arp 143).

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Christopher J. Burke, P. R. McCullough, Jeff A. Valenti, Doug Long, Christopher M. Johns-Krull, P. Machalek, Kenneth A. Janes, B. Taylor, Michael L. Fleenor, Cindy N. Foote, Bruce L. Gary, Enrique Garcia-Melendo, J. Gregorio, T. Vanmunster. 2008-05-15. XO-5b: A Transiting Jupiter-sized Planet With A Four Day Period. https://doi.org/10.1086/591497

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