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.
Brenna Mockler et al 2019 ApJ 872 151
Modeling of 14 tidal disruption events suggest the events have black-hole masses of 106–108 M⊙ and that the masses predicted are as reliable as those based on bulk galaxy properties.
Avery F. Garon et al 2019 AJ 157 126
Citizen science is used to study the impact of cluster environment on the morphology of a sample of 4,304 extended radio galaxies, for which 87% lie within a projected 15 Mpc of an optically identified cluster.