Alexander P. Stephan et al 2020 ApJ 889 45
Modeling shows that planet consumption by stellar hosts can cause transient luminosity features that last on the order of centuries to millennia, and post-consumption stellar spin can increase to break-up speeds.
Daniel Tafoya et al 2020 ApJL 890 L14
New observations of CO emission from the asymptotic giant branch star W43A trace the whole stream of the star’s jet from its driving source out to the regions where it shapes the circumstellar envelope.
Fabo Feng et al 2020 ApJS 246 11
Reanalysis of spectrometry data for 38 M dwarfs uncovered 16 planet candidates, including two conservative-habitable-zone super-Earths and a cold super-Neptune that may all be candidates for direct imaging.
Kianusch Mehrgan et al 2019 ApJ 887 195
A supermassive black hole discovered at the center of Holm 15A, the brightest cluster galaxy of the galaxy cluster Abell 85, is the most massive black hole with a direct dynamical detection in the local universe.
Maximilian N. Günther et al 2020 AJ 159 60
Of the 24,809 stars observed with 2 minute cadence during the first two months of the TESS mission, 1228 (673 of which are M dwarfs) are identified as flaring stars in new analysis.
Ilpo I. Virtanen et al 2020 ApJL 889 L28
Observations of the evolution of the solar coronal magnetic field over the last 50 years suggest that the effective volume of the solar corona abruptly shrank to less than one half over only a few years at the end of 1990.