WASP-4b: A 12th magnitude transiting hot Jupiter in the southern hemisphere
Creators
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Wilson, D. M.1
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Gillon, M.2, 3
- Hellier, C.1
- Maxted, P. F. L.1
- Pepe, F.2
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Queloz, D.2
- Anderson, D. R.1
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Collier Cameron, A.4
- Smalley, B.1
- Lister, T. A.1, 5
- Bentley, S. J.1
- Blecha, A.2
- Christian, D. J.6
- Enoch, B.7
- Haswell, C. A.7
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Hebb, L.4
- Horne, K.4
- Irwin, J.8, 9
- Joshi, Y. C.6
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Kane, S. R.10
- Marmier, M.2
- Mayor, M.2
- Parley, N.7
- Pollacco, D.6
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Pont, F.2
- Ryans, R.6
- Segransan, D.2
- Skillen, I.11
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Street, R. A.5, 6, 12
- Udry, S.2
- West, R. G.13
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Wheatley, P. J.14
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1.
Keele University
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2.
University of Geneva
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3.
University of Liège
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4.
University of St Andrews
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5.
Las Cumbres Observatory Global Telescope Network
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6.
Queen's University Belfast
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7.
The Open University
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8.
University of Cambridge
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9.
Harvard-Smithsonian Center for Astrophysics
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10.
California Institute of Technology
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11.
Isaac Newton Group
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12.
University of California, Santa Barbara
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13.
University of Leicester
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14.
University of Warwick
Abstract
We report the discovery of WASP-4b, a large transiting gas-giant planet with an orbital period of 1.34 days. This is the first planet to be discovered by the SuperWASP-South observatory and CORALIE collaboration and the first planet orbiting a star brighter than 16th magnitude to be discovered in the southern hemisphere. A simultaneous fit to high-quality light curves and precision radial velocity measurements leads to a planetary mass of 1.22^(+0.09)_(−0.08) M_(Jup) and a planetary radius of 1.42^(+0.07)_(−0.04) R_(Jup). The host star is USNO-B1.0 0479–0948995, a G7 V star of visual magnitude 12.5. As a result of the short orbital period, the predicted surface temperature of the planet is 1761 K, making it an ideal candidate for detections of the secondary eclipse at infrared wavelengths.
Additional Information
© 2008. The American Astronomical Society. Received 2007 November 22; accepted 2008 January 30; published 2008 February 5. The WASP Consortium includes the Universities of Keele, Leicester, and St. Andrews, Queen's University Belfast, the Open University, and the Isaac Newton Group. WASP-S is hosted by the South African Astronomical Observatory (SAAO), and we are grateful for their support and assistance. Funding for WASP comes from Consortium Universities and the UK's Science and Technology Facilities Council.Attached Files
Published - WILapjl08.pdf
Files
WILapjl08.pdf
Additional details
Identifiers
- Eprint ID
- 14678
- Resolver ID
- CaltechAUTHORS:20090727-142747868
Funding
- Consortium Universities
- Science and Technology Facilities Council (STFC)
Dates
- Created
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2009-08-12Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field
Caltech Custom Metadata
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)