Yasuhiro Hasegawa et al 2019 ApJL 876 L32
Models attempting to reproduce the heavy-element content trend of observed exoplanets imply that planets initially underwent efficient solid accretion beyond r ≥ 0.6 AU and subsequently migrated to their present locations.
Raffaele D’Abrusco et al 2019 ApJS 242 4
Two new catalogs are presented of radio-loud candidate blazars with mid-infrared colors consistent with the colors of confirmed γ-ray-emitting blazars; these catalogs will help with identification of the γ-ray sky.
Philip Massey et al 2019 AJ 157 227
11 new quasars have been discovered behind the stellar disks of the spiral galaxies M31 and M33, bringing the total to 26; these sources will serve as excellent probes of the interstellar medium in these stellar disks.
J. A. Hodge et al 2019 ApJ 876 130
ALMA observations of six luminous submillimeter galaxies reveal clear curvature and/or clump-like structures bracketing elongated nuclear emission, suggestive of bars, star-forming rings, and spiral arms.
Kai-Kai Duan et al 2019 ApJL 876 L28
The forward shock afterglow emission of GW170817/GRB 170817A fits into a natural sequence with luminous short gamma-ray burst (sGRB) afterglow emission, supporting a GW170817-like merger origin of bright SGRBs.
Richard L. White et al 2019 ApJS 241 37
A new VLA radio survey of the Local-Group galaxy M33 produced a catalog of 2,875 sources, including 155 optical supernova remnants — the largest sample of remnants at known distances with multiwavelength coverage.