Institute of Astronomy

Kepler Planets - retention and loss of their atmospheres

SpeakerTalk DateTalk Series
James Owen (Imperial)26 April 2018Institute of Astronomy Colloquia

Abstract

Recent advances in exoplanet detection and characterization has
told us that a new class of planet exists close to many stars. These planets
have radii between that of the Earth and Neptune, yet periods of several to
hundreds of days. Density measurements of some of these planets imply they
must have voluminous H/He atmospheres. I will describe our current
understanding for how these planets may have acquired their atmospheres and
how their histories are dominated by, in some cases futile, attempts for
them to retain these atmospheres so close to their parent stars.

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