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.
Adam Ginsburg et al 2019 ApJ 872 54
ALMA observations revealed NaCl, KCl, and their 37Cl and 41K isotopologues in the high-mass protostellar disk around Orion SrcI, tracing the region just above the continuum disk and possibly forming the base of the outflow.
Edward F. Schlafly et al 2019 ApJS 240 30
The unWISE Catalog, which contains the positions and fluxes of ~2 billion objects observed by WISE over the full sky, improves on the AllWISE catalog with deeper imaging and improved modeling of crowded regions.