Evan N. Kirby et al 2019 ApJ 881 45
Measurements of abundances in dwarf-galaxy satellites of the Milky Way suggest that the dominant type of supernova Ia in ancient dwarf galaxies is the explosion of a sub-Chandrasekhar-mass white dwarf.
Juan A. Sanchez et al 2019 ApJL 881 L6
New photometric and spectroscopic data of main-belt asteroid (6478) Gault favor a compositional affinity between Gault and asteroid (25) Phocaea and rule out a compositional link with the Tamara family.
Nora Bailey and Daniel Fabrycky 2019 AJ 158 94
Gravitational scattering among planets in a system, combined with a close flyby of another star, may generate a population of “Oort” exoplanets that orbit at wide distances of 100 to 5,000 AU.
Aomawa L. Shields 2019 ApJS 243 30
This review summarizes the origins and evolution of the burgeoning field of exoplanet climatology, work to identify those planets most capable of supporting life, and offers a glimpse into future directions of the field.
J. Svoboda et al 2019 ApJ 880 144
New observations suggest at least some Green Peas — compact, highly star-forming dwarf galaxies — produce copious amounts of highly energetic photons, larger than detected in other star-forming galaxies.
Dániel Apai et al 2019 AJ 158 83
The Nautilus concept is based on an array of inflatable spacecraft carrying very large diameter (8.5 m), very low weight lenses, enabling the characterization of 1,000 transiting exo-Earth candidates.