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Absolute properties of the low-mass eclipsing binary CM Draconis
J. C. Morales, I. Ribas, C. Jordi +12
Spectroscopic and eclipsing binary systems offer the best means for determining accurate physical properties of stars, including their masses and radii. The data available for low-…
A New Spectroscopic and Photometric Analysis of the Transiting Planet Systems TrES-3 and TrES-4
A. Sozzetti, G. Torres, D. Charbonneau +17
We report new spectroscopic and photometric observations of the parent stars of the recently discovered transiting planets TrES-3 and TrES-4. A detailed abundance analysis based on…
Absolute dimensions of eclipsing binaries. XXVI. Setting a new standard: Masses, radii, and abundances for the F-type systems AD Bootis, VZ Hydrae, and WZ Ophiuchi
J. V. Clausen, G. Torres, H. Bruntt +5
We determine absolute dimensions and abundances for the three F-type main-sequence detached eclipsing binaries AD Boo, VZ Hya, and WZ Oph and perform a detailed comparison with res…
HAT-P-7b: An Extremely Hot Massive Planet Transiting a Bright Star in the Kepler Field
A. Pal, G. A. Bakos, G. Torres +14
We report on the latest discovery of the HATNet project; a very hot giant planet orbiting a bright (V = 10.5) star with a small semi-major axis of a = 0.0377 +/- 0.0005 AU. Ephemer…
HAT-P-6b: A Hot Jupiter transiting a bright F star
R. W. Noyes, G. A. Bakos, G. Torres +17
In the ongoing HATNet survey we have detected a giant planet, with radius 1.33 +/- 0.06 RJup and mass 1.06 +/- 0.12 MJup, transiting the bright (V = 10.5) star GSC 03239-00992. The…
Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A
A. F. Boden, G. Torres, A. I. Sargent +9
We report on interferometric and radial-velocity observations of the double-lined 51-d period binary (A) component of the quadruple pre-main sequence (PMS) system V773 Tau. With th…
Improving Stellar and Planetary Parameters of Transiting Planet Systems: The Case of TrES-2
A. Sozzetti, G. Torres, D. Charbonneau +5
We report on a spectroscopic determination of the atmospheric parameters and chemical abundance of the parent star of the recently discovered transiting planet {TrES-2}. A detailed…
The Mass and Radius of the Unseen M-Dwarf Companion in the Single-Lined Eclipsing Binary HAT-TR-205-013
T. G. Beatty, J. M. Fernandez, D. W. Latham +7
We derive masses and radii for both components in the single-lined eclipsing binary HAT-TR-205-013, which consists of a F7V primary and a late M-dwarf secondary. The system's perio…
The First DIRECT Distance Determination to a Detached Eclipsing Binary in M33
A. Z. Bonanos, K. Z. Stanek, R. P. Kudritzki +12
We present the first direct distance determination to a detached eclipsing binary in M33, which was found by the DIRECT Project. Located in the OB 66 association at coordinates (al…
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…
Chemical Composition of the Planet-Harboring Star TrES-1
A. Sozzetti, D. Yong, B. W. Carney +3
We present a detailed chemical abundance analysis of the parent star of the transiting extrasolar planet TrES-1. Based on high-resolution Keck/HIRES and HET/HRS spectra, we have de…
Dynamical Masses for Low-Mass Pre-Main Sequence Stars: A Preliminary Physical Orbit for HD 98800 B
A. F. Boden, A. I. Sargent, R. L. Akeson +7
We report on Keck Interferometer observations of the double-lined binary (B) component of the quadruple pre-main sequence (PMS) system HD 98800. With these interferometric observat…
A transiting extrasolar giant planet around the star OGLE-TR-10
Maciej Konacki, Guillermo Torres, Dimitar D. Sasselov +1
We report a transiting extrasolar giant planet around the star OGLE-TR-10 (orbital period = 3.1 days), which was uncovered as a candidate by the OGLE team in their photometric surv…
High-Resolution Spectroscopy of the Transiting Planet Host Star TrES-1
A. Sozzetti, D. Yong, G. Torres +6
We report on a spectroscopic determination of the stellar parameters and chemical abundances for the parent star of the transiting planet TrES-1. Based on a detailed analysis of ir…
When Do Planets Form? A Search for Extra-solar Planets Around Metal-Poor Stars
A. Sozzetti, D. W. Latham, G. Torres +4
We present preliminary results from our spectroscopic search for planets within 1 AU of metal-poor field dwarfs using NASA time with HIRES on Keck I. The core accretion model of ga…
Sub-Subgiants in the Old Open Cluster M67?
R. D. Mathieu, M. van den Berg, G. Torres +3
We report the discovery of two spectroscopic binaries in the field of the old open cluster M67 -- S1063 and S1113 -- whose positions in the color-magnitude diagram place them appro…
HD 80606 b, a planet on an extremely elongated orbit
D. Naef, D. W. Latham, M. Mayor +9
We report the detection of a planetary companion orbiting the solar-type star HD 80606, the brighter component of a wide binary with a projected separation of about 2000 AU. Using…
Absolute dimensions of the unevolved B-type eclipsing binary GG Orionis
G. Torres, C. H. S. Lacy, A. Claret +1
We present photometric observations in B and V as well as spectroscopic observations of the detached, eccentric 6.6-day double-lined eclipsing binary GG Ori, a member of the Orion…