Mathew Schofield et al 2019 ApJS 241 12
The target list of solar-type stars to be observed in short-cadence (2 minutes) for asteroseismology by the NASA TESS mission is comprised of bright, cool main-sequence and subgiant stars.
Nick Choksi et al 2019 ApJ 873 100
Models indicate that black-hole binaries that are ejected and later merge ex situ form in star clusters of a characteristic mass M ~ 105.3 M☉, whereas binaries that merge in situ form in more massive clusters, M ~ 105.7 M☉.
Shoya Kamiaka et al 2019 AJ 157 137
Asteroseismology of Kepler-408 reveals that the stellar inclination is ~42° relative to the orbit of its 0.86-Earth-radius planet. Kepler-408b is by far the smallest planet known to have a significantly misaligned orbit.
Daniela Bettoni et al 2019 ApJL 873 L14
Hubble images revealed an Einstein cross lensing system that consists of an unusual Lyman-break galaxy (LBG) at z = 3.03 lensed by a galaxy at z = 0.556. This is only the second known case of a lensed LBG.
Elen C. A. Golightly et al 2019 ApJ 872 163
Models show that, for a fast-spinning black hole, whether the spin is prograde or retrograde has significant impact on the effectiveness and timing of a tidal disruption event, with prograde spins resulting in faster fallback.
Chan-Kao Chang et al 2019 ApJS 241 6
A Pan-STARRS survey of asteroid rotation periods has discovered 7 new super-fast rotators, asteroids with rotation periods shorter than 2 hours and diameters larger than ~0.3 km.