About 20 years after the discovery of the first extrasolar planet, the number of planets known
has grown by three orders of magnitude, and continues to increase at neck breaking pace …

In no other field of astrophysics has the impact of new instrumentation been as substantial
as in the domain of exoplanets. Before 1995 our knowledge of exoplanets was mainly based …

There are no planets intermediate in size between Earth and Neptune in our Solar System,
yet these objects are found around a substantial fraction of other stars. Population statistics …

We explore how well spectra from the James Webb Space Telescope (JWST) will likely
constrain bulk atmospheric properties of transiting exoplanets. We start by modeling the …

Close-in super-Earths, with radii R≈ 2–5 R⊕ and orbital periods P< 100 d, orbit more than
half, and perhaps nearly all, Sun-like stars in the Universe. We use this omnipresent …

We use models of thermal evolution and extreme ultraviolet (XUV) driven mass loss to
explore the composition and history of low-mass, low-density transiting planets. We …

We present a retrieval method based on Bayesian analysis to infer the atmospheric
compositions and surface or cloud-top pressures from transmission spectra of exoplanets …

Planets larger than Earth and smaller than Neptune are some of the most numerous in the
galaxy, but observational efforts to understand this population have proved challenging …

One of the most profound questions about the newly discovered class of low-density super-
Earths is whether these exoplanets are predominately H 2-dominated mini-Neptunes or …

We perform modeling investigations to aid in understanding the atmospheres and
composition of small planets of∼ 2–4 Earth radii, which are now known to be common in our …