Extrasolar Planets: February 2014

Although liquid water covers a majority of Earth's surface, scientists are still searching for planets outside of our solar system that contain water.

Photosynthetic life requires sufficient photosynthetically active radiation (PAR) to metabolise. On Earth, plant behaviour, physiology and metabolism are sculpted around the night-day cycle by an endogenous biological circadian clock.

The atmospheric composition of transiting exoplanets can be characterized during transit by spectroscopy.

In this paper, we address the migration of small mass planets in 3D radiative disks. Indeed, migration of small planets is known to be too fast inwards in locally isothermal conditions.

We make a preliminary assessment on the habitability of potential rocky exoplanets around Alpha Centauri B.

With improvements in exoplanet detection techniques, the number of multiple planet systems discovered is increasing, while the detection of potentially habitable Earth-mass planets remains complicated and thus requires new search strategies.

M type stars are good targets in the search for habitable extrasolar planets. Because of their low effective temperatures, the habitable zone of M stars is very close to the star itself.