Alexander Hubbard 2017 ApJL 840 L5

Planetary systems that underwent dramatic, long-lived accretion events may host planetary systems similar to our own, while ones that didn’t may instead host very close in, tightly packed planetary systems.

A. L. Faisst et al 2017 ApJ 839 71

Observations of z≲2 massive galaxies suggest that quenching is a fast process in galaxies with mass of ≥10^11 solar masses, and that major mergers likely play a significant role in the final steps of their evolution.

Ravit Helled and David Stevenson 2017 ApJL 840 L4

A new model suggests the cores of giant planets might not be distinct from the envelopes surrounding them, unlike the traditional picture of heavy-element cores clearly separated from gaseous envelopes.

Paul L. Schechter et al 2017 AJ 153 219

Eight candidate gravitationally lensed quasar systems discovered in the VST-ATLAS survey have been followed up with spectroscopic observations, revealing a diverse variety of systems.

B. Gompertz and A. Fruchter 2017 ApJ 839 49

Observations suggest that only a magnetar with a spin period of ~1 ms or faster could provide enough energy to power the associated events of the ultra-long gamma-ray burst 111209A and Supernova 2011kl.

Francesca M. Fornasini et al 2017 ApJS 229 33

38 hard X-ray sources are detected by NuSTAR in the direction of the Norma spiral arm, including active galactic nuclei, X-ray binaries, pulsar wind nebulae, and cataclysmic variables.