Xiaodian Chen et al 2020 ApJS 249 18
The second data release from ZTF contains 781,602 periodic variables — 79.5% of which are newly discovered or newly classified — that can be used to investigate our galaxy’s disk structure and evolution.
Tereasa G. Brainerd and Adam Samuels 2020 ApJL 898 L15
A study of satellites of bright, isolated host galaxies shows a strong tendency for pairs of satellites to be located on the same side of their host, resulting in lopsided spatial distributions.
Imke de Pater et al 2020 Planet. Sci. J. 1 29
Many observed SO emission areas are not known volcanos; instead, the emissions may be caused by a large number of stealth plumes, produced through the interaction of silicate melts with superheated SO2 vapor at depth.
Giovanni Novara et al 2020 ApJ 898 37
Analysis of a rare flare at a redshift of z = 0.092 — captured by chance by the XMM–Newton spacecraft — suggests that it may be interpreted as a supernova shock break-out or an early cocoon.
Karoline M. Gilbert et al 2020 AJ 160 41
New measurements show that abundances of stars in M31’s outer halo are more similar to the abundances of Milky Way halo stars than to the abundances of stars in M31’s inner halo.
Luca Bertello et al 2020 ApJ 897 181
Consistent monitoring of the solar chromosphere during 1915–1985 from the Mount Wilson Observatory shows that the global chromospheric dynamics have not significantly changed over this range of 70 years.