Dennis Zaritsky et al 2020 ApJL 905 L3

15 stars have been discovered in the H3 survey that lie, in projection, near the tip of the trailing gaseous Magellanic Stream; these likely represent debris of past Magellanic Cloud encounters.

Mireia Montes et al 2020 ApJ 904 114

Deep optical imaging of NGC 1052-DF4 has detected tidal tails in this object caused by its interaction with its neighboring galaxy NGC 1035, possibly explaining NGC 1052-DF4’s apparent dearth of dark matter.

George Younes et al 2020 ApJL 904 L21

NICER observations captured the 217 high-energy bursts emitted by magnetar SGR 1935+2154 over 1,120 seconds in April 2020, as well as the persistent emission that gradually declined over the next 40 days.

Cicero X. Lu et al 2020 AJ 160 253

Analysis of the Kepler Data Release 25 planet candidate list demonstrates that planet occurrence increases with metallicity for all planet radii R_p down to at least R_p ≈ 2 R_⊕.

C. M. Ko et al 2020 ApJ 904 46

Calculations show that routine tidal disruption of stars by the supermassive black hole at the galactic center can provide enough cumulative energy to form and maintain large-scale structures like the Fermi Bubbles.

Tomoyuki Tajiri et al 2020 ApJS 251 18

35 dippers — young stellar objects that exhibit episodic dimming — are found within one year’s worth of Transiting Exoplanet Survey Satellite (TESS) full-frame images using a convolutional neural network.