Felipe O. Alves et al 2020 ApJL 904 L6
New ALMA observations of a nearly edge-on disk reveal an interesting case where both a star (from the environment and the disk) and a planet (from the disk) are growing in tandem.
Nicholas Wogan et al 2020 Planet. Sci. J. 1 58
New modeling suggests that volcanoes are unlikely to produce methane fluxes comparable to biological fluxes, indicating that atmospheric methane with carbon dioxide can be used as a biosignature.
Kevin C. Cooke et al 2020 ApJ 903 106
New observations of CQ 4479, a cold quasar at z ~ 0.405, reveal a starburst galaxy with a young stellar population, a high gas mass fraction, and an early-stage AGN that doesn’t yet dominate the far-infrared emission.
Javier Roa et al 2020 AJ 160 250
New analysis suggests that 90% of near-Earth asteroids and 93% of potentially hazardous asteroids are detectable within the next 50 years using an an I52-class or Subaru-class telescope.
Andreas M. Hein et al 2020 ApJL 903 L36
A precursor astrobiological mission could search for putative lifeforms in Venus’s cloud deck using instrument balloons, which could be delivered to Venus via launch opportunities in 2022–2023.
E. W. Cliver et al 2020 ApJ 903 41
The 774 AD solar proton event, a tremendous increase in proton influx identified in measurements of Japanese tree rings, may have been produced by a single, 1033-erg solar superflare.