M. Ansdell et al 2017 AJ 153 240
ALMA’s observations of dust and gas in 92 protoplanetary disks around σ Orionis members suggest that after only a few Myr of evolution most disks lack sufficient dust to form giant planet cores.
Masumi Shimojo et al 2017 ApJL 841 L5
Simultaneous observations in mm with ALMA, EUV with SDO/AIA, and soft X-rays with Hinode reveal an erupting plasmoid that is either isothermal 105 K plasma or a 104 K core with a hot envelope.
J. Kóta and J. R. Jokipii 2017 ApJ 839 126
A new model suggests Voyager 1’s observations of the galactic cosmic-ray flux beyond the heliopause could indicate the presence of a gradual shock followed by a slow decrease of magnetic field strength.
Zhe Xu et al 2017 ApJL 840 L21
Observations of a M7.9 solar flare reveal significant change in sunspot structure on the solar surface in response to the flare — likely due to the restructuring of coronal magnetic fields.
Chen Wang et al 2017 ApJS 230 5
Filaments and other structures have been discovered in the process of mapping the molecular gas over a 9° × 6.5° area toward the GEM OB1 association in the galactic anti-center direction.
Jeffrey Fung and Eugene Chiang 2017 ApJ 839 100
Simulations show that over time, sufficiently compact systems of super-Earths can clear their natal protoplanetary disk gas either inward to feed their star or outward to be blown away from the system.