Matthew T. Penny et al 2019 ApJS 241 3

Predictions for the upcoming Wide Field InfraRed Survey Telescope (WFIRST) mission suggest the survey should detect a total of ~1400 bound exoplanets with mass greater than ~0.1 M_⊕ via microlensing.

D. J. McComas et al 2019 ApJ 872 127

Recent IBEX observations are consistent with the heliosphere being shaped by the combined flow and magnetic pressures of the local interstellar medium, and they support a non-spherical heliosphere model.

Kazuhiro Shimasaku and Takuma Izumi 2019 ApJL 872 L29

A vast majority of a sample of 49 supermassive black holes at z ~ 6 are more massive than expected from the local black-hole–halo mass relation, suggesting growth of the black holes precedes that of the halos.

Nikhil Sarin et al 2019 ApJ 872 114

The X-ray data for two gamma-ray bursts are fit with a millisecond-magnetar model and a fireball-shock model; the millisecond-magnetar model is favored for most nuclear equations of state.

M. V. Banda-Huarca et al 2019 AJ 157 120

More than 4 million observations from the Dark Energy Survey were searched for small solar system bodies — recovering a total of 202 trans-Neptunian objects and Centaurs — and stellar occultations predicted.

John H. Debes et al 2019 ApJL 872 L25

A recent citizen-scientist discovery suggests that large-scale tidal disruption events can still occur around white dwarfs 3 billion years after the white dwarf’s formation — much later than was previously thought.