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A Survey of Proper Motion Stars. XVII. A Deficiency of Binary Stars on Retrograde Galactic Orbits and the Possibility that omega Centauri is Related to the Effect
Bruce W. Carney, Luis A. Aguilar, David W. Latham +1
We find a deficiency of binary stars moving on strongly retrograde Galactic orbits. No binary deficiencies are seen for U or W velocities, however. From theoretical analyses, we ru…
Metal-poor Field Blue Stragglers: More Evidence for Mass Transfer
Bruce W. Carney, David W. Latham, John B. Laird
We report radial velocity studies of five candidate metal-poor field blue stragglers, all known to be deficient in lithium. Four of the five stars are single-lined spectroscopic bi…
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…
TrES-1: The Transiting Planet of a Bright K0V Star
Roi Alonso, Timothy M. Brown, Guillermo Torres +9
We report the detection of a transiting Jupiter-sized planet orbiting a relatively bright (V=11.79) K0V star. We detected the transit light-curve signature in the course of the TrE…
The effect of metallicity on the Cepheid Period-Luminosity relation from a Baade-Wesselink analysis of Cepheids in the Galaxy and in the Small Magellanic Cloud
Jesper Storm, Bruce W. Carney, Wolfgang P. Gieren +3
(ABRIDGED) We have applied the near-IR Barnes-Evans realization of the Baade-Wesselink method as calibrated by Fouque & Gieren (1997) to five metal-poor Cepheids with periods betwe…
Astrophysical False Positives Encountered in Wide-Field Transit Searches
David Charbonneau, Timothy M. Brown, Edward W. Dunham +3
Wide-field photometric transit surveys for Jupiter-sized planets are inundated by astrophysical false positives, namely systems that contain an eclipsing binary and mimic the desir…