Gina E. Duggan et al 2018 ApJ 869 50
Measurements of barium abundances in dwarf galaxies indicate that neutron-star mergers are the most likely source of r-process element production in dwarf galaxies at early times.
Christopher Spalding 2018 ApJL 869 L17
Models demonstrate that leftover debris interior to Mercury’s current orbit could have been driven outward by the early solar wind, clearing this region and providing material for terrestrial planets and asteroids.
Yang Wang et al 2018 ApJ 868 130
Hydrodynamical resimulations exploring the relationship between galaxy properties and evironment suggest that galaxies in denser environments tend to be redder and are more likely to be quenched.
T. M. C. Abbott et al 2018 ApJS 239 18
The first public data release of the Dark Energy Survey consists of optical/near-infared images from ~5000 deg2 of the southern galactic cap, including nearly 400 million distinct astronomical objects.
C. Alig et al 2018 ApJL 869 L2
Hydrodynamical simulations of the Smith Cloud impact onto the gaseous Milky Way galactic disk suggest the possibility of an observable, highly localized starburst event in the far future.
Po-Feng Wu et al 2018 ApJ 868 37
The observed ages and sizes of a sample of quiescent galaxies suggests two evolutionary paths to quiescence: one with gradual shutdown of star formation, and one with rapid quenching and structural changes to the galaxy.