Martín A. Guerrero et al 2019 ApJ 884 134
The central star of NGC 2392, which shows the hardest X-ray emission among central stars of planetary nebulae, displays rapid X-ray variability that may be due to accretion of material from an unseen companion.
Samuel N. Quinn et al 2019 AJ 158 177
TESS has discovered a multi-planet system of up to five planets around the dwarf star TOI-125, providing an opportunity to study planets of similar size while controlling for age and environment.
Aidan McBride and Marina Kounkel 2019 ApJ 884 6
Gaia DR2 data is used to identify 26 candidate runaway stars that likely experienced dynamical ejection from unstable young triple systems or some other close three-body encounter in the last 1 Myr.
Ye Li et al 2019 ApJL 884 L26
The host galaxy of FRB 121102 is consistent with those of long gamma-ray bursts and superluminous supernovae, but host galaxy candidates of other nearby fast radio bursts are not — suggesting that FRB hosts are very diverse.
M. Lazzarini et al 2019 ApJ 884 2
The first deep hard X-ray (E > 10 keV) survey of the Small Magellanic Cloud, conducted with NuSTAR, detected 10 sources above a 3σ significance level and obtained upper limits on an additional 40 sources.
James Paul Mason et al 2019 ApJS 244 13
Four years of continuous SDO EVE observations are evaluated to compile James’s EVE Dimming Index (JEDI), a catalog of coronal dimming events — temporary voids created when coronal mass ejections depart from the Sun.