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.
Y. Yang et al 2019 ApJ 876 122
Modeling suggests that black-hole binaries merging within the accretion disks of active galactic nuclei could be responsible for 10–50% of binary black hole gravitational-wave detections by LIGO/VIRGO.
L. G. Bouma et al 2019 AJ 157 217
TESS observations of the hot Jupiter WASP-4b show that its transits occur 81.6 ± 11.7 s earlier than predicted, suggesting this planet’s 1.3-day period is decreasing at a rate of –12.6 ms per year.