J. R. Szalay et al 2020 ApJS 246 27
The Parker Solar Probe’s measurements as it flies into the densest, innermost region of our solar system’s zodiacal cloud suggest that the impactor population consists of dust grains on hyperbolic orbits escaping the solar system.
Tomoki Terasaki et al 2020 ApJL 890 L17
Calculations suggest that the WFIRST supernova deep survey will be able to detect ~20 fast luminous blue transients at the epoch of reionization in the near future, providing a novel probe of this time period.
Megan Donahue et al 2020 ApJ 889 121
A sample of X-ray sources — previously either unidentified or classified as X-ray active galactic nuclei — are studied with new, brief Chandra observations; eight are found to be X-ray luminous clusters of galaxies.
Jessica E. Libby-Roberts et al 2020 AJ 159 57
Transit observations of two large, low-density super-puff planets orbiting Kepler 51 reveal no significant water absorption features in their atmospheres, possibly indicating the presence of high-altitude aerosol layers.
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.