Shunya Takekawa et al 2019 ApJL 871 L1
ALMA-discovered molecular gas streams orbiting around an invisible massive object in the central region of our galaxy provide new circumstantial evidence for a wandering intermediate-mass black hole in the galactic center.
Yu Wang et al 2019 ApJ 870 132
Two X-ray bright clumps in the nearby NGC 6338 galaxy group exhibit features that suggest the group is undergoing a head-on collision that is in a stage of pre-core passage.
Marta L. Bryan et al 2019 AJ 157 52
Jupiter analogs are more common around stars hosting super-Earths, suggesting the presence of outer gas giants doesn’t suppress the formation of inner super-Earths; instead, these populations seem to be correlated.
Benedikt Diemer 2018 ApJS 239 35
Colossus is a public, open-source python package that can be used for calculations related to cosmology, the large-scale structure of matter in the universe, and the properties of dark-matter halos.
Nicholas Mondrik et al 2019 ApJ 870 10
Analysis of mid-to-late M dwarfs in the MEarth survey suggest that intermediate rotators have higher flare rates than both slow and rapid rotators, possibly due to changing magnetic field geometry on the surface of the star.
Fabio Pacucci and Abraham Loeb 2019 ApJL 870 L12
The discovery of the first strongly lensed quasar at z > 6 indicates the potential presence of a substantial population of lensed z > 6 quasars misclassified and mixed up with low-z galaxies.