Journal
ASTROPHYSICAL JOURNAL
Volume 686, Issue 2, Pages 1331-1340Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/591497
Keywords
galaxies: individual (NGC 2444, NGC 2445); planetary systems; stars: individual (GSC 02959-00729)
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Funding
- NASA [NNG06GG92G]
- STScI
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The star XO-5 (GSC 02959-00729, V = 12.1, G8 V) hosts a Jupiter-sized, R-p = 1.15 +/- 0.12 R-J, transiting extra-solar planet, XO-5b, with an orbital period of 4.2 days. The planet's mass, Mp = 1.15 +/- 0.08 M-J, and surface gravity, g(p) = 22 +/- 5 m s(-2), are large for its orbital period compared to most other transiting planets. However, the deviation from the M-p-P relationship for XO-5b is not as large as 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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