Ka-Wah Wong et al 2017 ApJL 849 L17
NuSTAR has detected hard X-ray emission >10 keV for the first time from the unresolved X-ray core of M87, long expected to emit at these wavelengths due to itsjet or accretion flow.
Shuhei Koyama et al 2017 ApJ 847 137
A study of local galaxies suggests that star formation activity within individual galaxies is primarily controlled by the galaxies’ molecular gas content, regardless of their global environment.
Radwan Tajeddine et al 2017 ApJS 232 28
The viscous spreading of Saturn’s A ring is found to be counteracted by the cumulative torques from the group of satellites Pan, Atlas, Prometheus, Pandora, Janus, Epimetheus, and Mimas.
Dylan Keating and Nicolas B. Cowan 2017 ApJL 849 L5
Re-analysis of WASP-43b eclipse data to include reflected light reveals a cooler dayside (1483 ± 10 K) and hotter nightside (1076 ± 11 K), reducing the problem of the large day–night contrast previously measured.
S. V. Berdyugina et al 2017 ApJ 847 61
The first direct detection is reported of a strong, 5 kG magnetic field on the surface of an active brown dwarf that exhibits transient radio and optical emission bursts modulated by fast rotation.
Steven S. Vogt et al 2017 AJ 154 181
An 18-year span of precision radial velocity measurements reveal the presence of a 6-planet system orbiting the G0V star HD 34445 with periods of 1057, 215, 118, 49, 677, and 5700 days.