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.
Xin Liu et al 2019 ApJ 887 90
SDSS J0849+1114 is the first known triple Type 2 Seyfert nucleus, representing three active black holes currently at kiloparsec-scale separations — though they may evolve into a bound triple system within 2 Gyr.
C. A. Grady et al 2020 ApJL 889 L21
Hubble imaging of the debris disk of M dwarf AU Mic tracks outward motion of features in the southeast arm, indicating that the debris disk is losing mass at ~10% of the stellar wind mass loss rate.
Lei Liu and Xiaoying Pang 2019 ApJS 245 32
A new star-cluster hunting pipeline is used to identify 2,443 star cluster candidates among disk stars in the second Gaia data release, including 76 that were previously unidentified.