WASP-26b: a 1-Jupiter-mass planet around an early-G-type star
Abstract
We report the discovery of WASP-26b, a moderately over-sized Jupiter-mass exoplanet transiting its 11.3-mag early-G-type host star (1SWASP J001824.70-151602.3; TYC 5839-876-1) every 2.7566 days. A simultaneous fit to transit photometry and radial-velocity measurements yields a planetary mass of 1.02 ± 0.03 MJup and radius of 1.32 ± 0.08 RJup. The host star, WASP-26, has a mass of 1.12 ± 0.03 M⊙ and a radius of 1.34 ± 0.06 R⊙ and is in a visual double with a fainter K-type star. The two stars are at least a common-proper motion pair with a common distance of around 250 ± 15 pc and an age of 6 ± 2 Gy.
RV and photometric data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/520/A56- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- September 2010
- DOI:
- arXiv:
- arXiv:1004.1542
- Bibcode:
- 2010A&A...520A..56S
- Keywords:
-
- planets and satellites: general;
- stars: individual: WASP-26;
- binaries: visual;
- techniques: photometric;
- techniques: spectroscopic;
- techniques: radial velocities;
- Astrophysics - Earth and Planetary Astrophysics;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 4 pages, 5 figure, submitted to A&