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Precise Radius Estimates for the Exoplanets WASP-1b and WASP-2b
David Charbonneau, Joshua N. Winn, Mark E. Everett +4
We present precise z-band photometric time series spanning times of transit of the two exoplanets recently discovered by the SuperWASP collaboration. We find planetary radii of 1.4…
Outcome of Six Candidate Transiting Planets from a TrES Field in Andromeda
Francis T. O'Donovan, David Charbonneau, Roi Alonso +7
Driven by the incomplete understanding of the formation of gas giant extrasolar planets and of their mass-radius relationship, several ground-based, wide-field photometric campaign…
HAT-P-1b: A Large-Radius, Low-Density Exoplanet Transiting one Member of a Stellar Binary
G. A. Bakos, R. W. Noyes, G. Kovacs +16
Using small automated telescopes in Arizona and Hawaii, the HATNet project has detected an object transiting one member of the double star system ADS 16402 AB. This system is a pai…
TrES-2: The First Transiting Planet in the Kepler Field
Francis T. O'Donovan, David Charbonneau, Georgi Mandushev +17
We announce the discovery of the second transiting hot Jupiter discovered by the Trans-atlantic Exoplanet Survey. The planet, which we dub TrES-2, orbits the nearby star GSC 03549-…
The Transit Light Curve (TLC) Project. I. Four Consecutive Transits of the Exoplanet XO-1b
Matthew J. Holman, Joshua N. Winn, David W. Latham +7
We present RIz photometry of four consecutive transits of the newly discovered exoplanet XO-1b. We improve upon the estimates of the transit parameters, finding the planetary radiu…
A Keck/HIRES Doppler Search for Planets Orbiting Metal-Poor Dwarfs. I. Testing Giant Planet Formation and Migration Scenarios
A. Sozzetti, G. Torres, D. W. Latham +5
We describe a high-precision Doppler search for giant planets orbiting a well-defined sample of metal-poor dwarfs in the field. This experiment constitutes a fundamental test of th…
Refined parameters of the planet orbiting HD 189733
G. A. Bakos, H. Knutson, F. Pont +13
We report on the BVRI multi-band follow-up photometry of the transiting extrasolar planet HD 189733b. We revise the transit parameters and find planetary radius RP = 1.154+/- 0.032…
Rejecting Astrophysical False Positives from the TrES Transiting Planet Survey: The Example of GSC 03885-00829
Francis T. O'Donovan, David Charbonneau, Guillermo Torres +8
Ground-based wide-field surveys for nearby transiting gas giants are yielding far fewer true planets than astrophysical false positives, of which some are difficult to reject. Rece…
A stellar companion in the HD 189733 system with a known transiting extrasolar planet
Gaspar A. Bakos, Andras Pal, David W. Latham +2
We show that the very close-by (19 pc) K0 star HD 189733, already found to be orbited by a transiting giant planet, is the primary of a double-star system, with the secondary being…
A Physical Orbit for the High Proper Motion Binary HD 9939
Andrew F. Boden, Guillermo Torres, David W. Latham
We report spectroscopic and interferometric observations of the high-proper motion double-lined binary system HD 9939, with an orbital period of approximately 25 days. By combining…