Matthew T. Penny et al 2017 AJ 153 161

Simulations suggest that it should be possible to detect between 1.4 and 7.9 free-floating planets in the K2 data set. Most will also have ground-based observations, enabling parallax measurements.

Csaba Kiss et al 2017 ApJL 838 L1

A likely moon has been discovered of 2007 OR10, the third largest known dwarf planet in the trans-Neptunian region. All trans-Neptunian objects larger than 1000 km are now known to harbor satellites.

Roman Gold et al 2017 ApJ 837 180

Comparing new simulation outcomes with EHT observations favors models with ordered magnetic fields near the black hole event horizon in Sgr A*. The emission could still be either disk- or jet-dominated.

T. R. Hunter et al 2017 ApJL 837 L29

Dust emission from a protostar in the massive protocluster NGC 6334I increased by a factor of 4 between 2008 and 2015, providing observational evidence of a sudden accretion event in the protostar’s growth.

Jason K. Chu et al 2017 ApJS 229 25

Far-infrared images and photometry are presented for 201 Luminous and Ultraluminous Infrared Galaxies (LIRGs), enabling detailed studies of AGN and starburst activity in LIRGs in the local universe.

David Nesvorný et al 2017 AJ 153 103

Modeling suggests the large-asteroid impact flux dropped by 1–2 orders of magnitude during the first 1 Gyr of the Solar System’s existence and remained relatively unchanged over the last 3 Gyr.