Archives

Extrasolar Planets: October 2014


We present fundamental stellar parameters and chemical abundances for a sample of 86 evolved stars with planets and for a control sample of 137 stars without planets.

During a live Google Hangout, three astrophysicists -- Zachory Berta-Thompson, Bruce Macintosh and Marie-Eve Naud -- discussed the huge variety of planets discovered so far, how close we are to being able to see other Earth-like planets, and all that remains unknown.

In order to test planetary accretion and differentiation scenarios, we integrated a multistage core-mantle differentiation model with N-body accretion simulations.

A team of scientists using NASA's Hubble Space Telescope has made the most detailed global map yet of the glow from a planet orbiting another star, revealing secrets of air temperatures and water.

Recent observations by the Kepler space telescope have led to the discovery of more than 4000 exoplanet candidates consisting of many systems with Earth- to Neptune-sized objects that reside well inside the orbit of Mercury, around their respective host stars.

Earth-like planets within the liquid water habitable zone of M type stars may evolve into synchronous rotators.

The detection of small planets orbiting nearby stars is an important step towards the identification of Earth twins.