Jay Anderson

TL;DR: The occurrence rate of close-in planets (with orbital periods less than 50 days), based on precise Doppler measurements of 166 Sun-like stars, is reported, indicating that theoretical models of planet formation predict a deficit of planets in the domain from 5 to 30 Earth masses and with orbital periods under 50 days are in fact well populated.

TL;DR: In this paper, a bifurcation of colors in the middle main sequence of the globular cluster ω Centauri was observed in three different fields, observed with different cameras and filters.

TL;DR: The Exoplanet Orbit Database as discussed by the authors is a database of well-determined orbital parameters of exoplanets, and their host stars' properties, which includes spectroscopic orbital elements measured for 427 planets orbiting 363 stars.

TL;DR: In this paper, the first results of a large Advanced Camera for Surveys (ACS) survey of Galactic globular clusters were presented, where the authors used fiducial sequences for three standard clusters (M92, NGC 6752, and 47 Tuc) with well-known metallicities and distances.

TL;DR: In this article, spectroscopic results showed that the blue main sequence is less metal-poor than the red main sequence, and they used stellar structure models to show that only greatly enhanced helium can explain the color difference between the two main sequences.