Journal
ASTRONOMY & ASTROPHYSICS
Volume 519, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201014817
Keywords
planetary systems; techniques: photometric; techniques: radial velocities
Categories
Funding
- ESO telescope at La Silla Observatory [081.C-0388, 082.C-0040, 084.C-0185]
- Universities of Keele, Leicester
- Open University
- Queen's University Belfast
- University of St. Andrews
- Isaac Newton Group (La Palma)
- Instituto de Astrofisica de Canarias (Tenerife)
- South African Astronomical Observatory
- UK Science and Technology Facilities Council
- CNRS/INSU
- Swiss National Science Foundation
- French National Research Agency [ANR-08-JCJC-0102-01]
- Science and Technology Facilities Council [PP/F000057/1, ST/G009465/1, ST/F002599/1, PP/F000065/1, ST/G002533/1, PP/D000963/1, ST/I002308/1, ST/G002355/1, PP/D000955/1, PP/F000073/1] Funding Source: researchfish
- STFC [ST/G002355/1, PP/D000963/1, PP/F000073/1, ST/I002308/1, PP/D000955/1, PP/F000065/1, PP/F000057/1, ST/F002599/1, ST/G009465/1, ST/G002533/1] Funding Source: UKRI
Ask authors/readers for more resources
We report the discovery of WASP-21b, a new transiting exoplanet discovered by the Wide Angle Search for Planets ( WASP) Consortium and established and characterized with the FIES, SOPHIE, CORALIE and HARPS fiber-fed echelle spectrographs. A 4.3-d period, 1.1% transit depth and 3.4-h duration are derived for WASP-21b using SuperWASP-North and high precision photometric observations at the Liverpool Telescope. Simultaneous fitting to the photometric and radial velocity data with a Markov Chain Monte Carlo procedure leads to a planet in the mass regime of Saturn. With a radius of 1.07 R-Jup and mass of 0.30 M-Jup, WASP-21b has a density close to 0.24 rho(Jup) corresponding to the distribution peak at low density of transiting gaseous giant planets. With a host star metallicity [Fe/H] of -0.46, WASP-21b strengthens the correlation between planetary density and host star metallicity for the five known Saturn-like transiting planets. Furthermore there are clear indications that WASP-21b is the first transiting planet belonging to the thick disc.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available