Anthony G. A. Brown

TL;DR: In this article, the authors describe the results of a search for the remnants of the Sun's birth cluster among stars in the Hipparcos Catalogue, based on the predicted phase-space distribution of the sun's siblings.

TL;DR: In this article, a novel data mining algorithm based on machine learning techniques, an artificial neural network, was applied to the Tycho-Gaia astrometric solution (TGAS) catalogue.

TL;DR: The European Space Agency's Gaia satellite was launched into orbit around L2 in December 2013 with a payload containing 106 large-format scientific CCDs as mentioned in this paper, and the primary goal of the mission is to repeatedly obtain high-precision astrometric and photometric measurements of one thousand million stars over the course of five years.

TL;DR: In this article, the authors use the first data release of the Gaia mission to explore the three dimensional arrangement and the age ordering of the many stellar groups towards the Orion OB association, aiming at a new classification and characterization of the stellar population.

TL;DR: In this article, the authors study the dynamical evolution of the comets in the Oort cloud, accounting for external perturbations (passing stars and the galactic tide) and construct an analytical model of stellar encounters.