Kojiro Kawana et al 2020 ApJL 890 L26
When a helium white dwarf is tidally disrupted by an intermediate-mass black hole, it will also be detonated by the tidal compression and by succeeding shocks, potentially producing a variety of observational signatures.
Richard G. Arendt et al 2020 ApJ 890 2
Spitzer’s final Infrared Array Camera observations of the supernova SN 1987A show the 3.6 and 4.5 μm emission from the equatorial ring continues a period of steady decline; this can be monitored in the furture with JWST.
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.