Aims. We present a large atmospheric study of 49 gas giant exoplanets using infrared
transmission photometry with Spitzer/IRAC at 3.6 and 4.5 μm. Methods. We uniformly …

Population studies of exoplanets are key to unlocking their statistical properties. So far, the
inferred properties have been mostly limited to planetary, orbital, and stellar parameters …

Until recently, infrared observations of exoplanetary atmospheres have typically been
interpreted using models that assumed solar elemental abundances. With the chemical …

Exoplanet atmosphere spectroscopy enables us to improve our understanding of exoplanets
just as remote sensing in our own solar system has increased our understanding of the solar …

Context. The James Webb Space Telescope will enable astronomers to obtain exoplanet
spectra of unprecedented precision. The MIRI instrument especially may shed light on the …

We present observations of two occultations of the extrasolar planet WASP-33b using the
Wide Field Camera 3 (WFC3) on the Hubble Space Telescope, which allow us to constrain …

We present the open-source radiative transfer code named HELIOS, which is constructed for
studying exoplanetary atmospheres. In its initial version, the model atmospheres of HELIOS …

We report the first detection of CO emission at high spectral resolution in the day-side
infrared thermal spectrum of an exoplanet. These emission lines, found in the atmosphere of …

A key hypothesis in the field of exoplanet atmospheres is the trend of atmospheric thermal
structure with planetary equilibrium temperature. We explore this trend and report here the …

Abstract We present new 3.6 and 4.5 μm Spitzer phase curves for the highly irradiated hot
Jupiter WASP-33b and the unusually dense Saturn-mass planet HD 149026b. As part of this …