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Habitable Zones & Global Climate: May 2015


From the numerous detected planets outside the Solar system, no terrestrial planet comparable to our Earth has been discovered so far.

Locating planets in HabitableZones (HZs) around other stars is a growing field in contemporary astronomy.

Young terrestrial planets, when they are still embedded in a circumstellar disk, accumulate an atmosphere of nebula gas.

We present the thermal evolution and emergent spectra of solidifying terrestrial planets along with the formation of steam atmospheres.

The water ice or snow line is one of the key properties of protoplanetary disks that determines the water content of terrestrial planets in the habitable zone.

Understanding the surface and atmospheric conditions of Earth-size, rocky planets in the habitable zones (HZs) of low-mass stars is currently one of the greatest astronomical endeavors.

We present the first investigation of Th abundances in Solar twins and analogues to understand the possible range of this radioactive element and its effect on rocky planet interior dynamics and potential habitability.