SuperWASP (Wide Angle Search for Planets) is performing an ultra-wide angle search for transiting extrasolar planets with the aim of covering the entire sky down to ~15th magnitude. SuperWASP consists of two robotic observatories; SuperWASP-North at Roque de los Muchachos Observatory on the island of La Palma in the Canaries and SuperWASP-South at the South African Astronomical Observatory, South Africa. Each observatory consists of an array of eight Canon 200mm f1.8 lenses backed by high quality 2k x 2k science grade CCDs. The large field of view of the Canon lenses gives each observatory a massive sky coverage of just under 500 square degrees per pointing. The observatories continually monitor the sky, taking a set of images approximately once per minute, resulting in a total of up to 100 gigabytes of data per night. By measuring the brightness of each star, in each image, small dips in brightness caused by Jupiter sized planets passing in front of their parent stars (transits) can be searched for. SuperWASP is operated by a consortium of eight academic institutions which include the University of Cambridge, the Instituto de Astrofisica de Canarias, the Isaac Newton Group of Telescopes, Keele University, the University of Leicester, the Open University, Queen's University Belfast and St. Andrews University. It is hoped that SuperWASP will revolutionize our understanding of planet formation paving the way for future space missions searching for 'Earth'-like worlds. On September 26, 2006, the team reported the discovery of two extrasolar planets: WASP-1b (orbiting 6 million km from star once every 2.5 days) and WASP-2b (orbiting 4.5 million km from star once every 2 days) [1] On October 31, 2007, the team reported the discovery of three extrasolar planets: WASP-3b, WASP-4b and WASP-5b. All three planets are similar to Jovian mass and are so close to their respective stars that their orbital periods are all less than two days. These are among the shortest orbital periods discovered. The surface temperatures of the planets should be more than 2000 degrees Celsius, owing to their short distances from their respective stars. The discoveries make the SuperWASP team the first and only one to detect planets in both the northern and southern hemispheres using the transit detection technique. [2] The WASP-4b and WASP-5b planets are the first planets discovered by the WASP project's cameras in South Africa, while WASP-3b is the third planet discovered by the WASP project's cameras in La Palma.
See also
References
- ^ Wide-eyed Telescope Finds its First Transiting Planets Around Distant Stars (PDF requires acrobat reader)
- ^ UK planet hunters announce three new finds (PDF requires acrobat reader)
External links
- SuperWASP primary website — links to individual university sites
- SuperWASP-South live status
- BBC News report: Planets have scientists buzzing
