▪ Abstract Until the late 1990s the rich Hyades and the sparse UMa clusters were the only
coeval, comoving concentrations of stars known within 60 pc of Earth. Both are hundreds of …

Context. KELT-9 b exemplifies a newly emerging class of short-period gaseous exoplanets
that tend to orbit hot, early type stars–termed ultra-hot Jupiters. The severe stellar irradiation …

With its imaged debris disk of dust, its evaporating exocomets, and an imaged giant planet,
the young (~ 23 Myr) β Pictoris system is a unique proxy for detailed studies of planet …

We analyse the transmission spectra of KELT-20b/MASCARA-2b to search for possible
thermal inversion agents. The data consist of three transits obtained using HARPSN and …

Abstract Using the Gemini Planet Imager located at Gemini South, we measured the near-
infrared (1.0–2.4 μm) spectrum of the planetary companion to the nearby, young star β …

ABSTRACT A principal scientific goal of the Gemini Planet Imager (GPI) is obtaining
milliarcsecond astrometry to constrain exoplanet orbits. However, astrometry of directly …

Rapid stellar rotation is an important phenomenon in stellar physics, particularly for massive
and intermediate mass main-sequence stars. This affects all aspects of the star's physics …

Aims. We search for signs of falling evaporating bodies (FEBs, also known as exocomets) in
photometric time series obtained for β Pictoris after fitting and removing its δ Scuti-type …

It has been suggested that β Pic b has a supersolar metallicity and subsolar C/O ratio.
Assuming solar carbon and oxygen abundances for the star β Pic and therefore the planet's …

We use Kepler photometry to examine the properties of low-frequency oscillations in A stars.
We find that multiple peaks in the range 0–5 d− 1 are found in nearly all δ Scuti stars, even …