Krzysztof Belczynski 2020 ApJL 905 L15
New calculations show that extremely massive black hole–black hole mergers (like GW190521) could, in fact, be formed through the classical isolated binary evolution, without the need to invoke exotic physics.
Hunter Goddard and Lior Shamir 2020 ApJS 251 28
Convolutional neural network classification is used to produce a catalog containing morphology labels for 1,662,190 galaxies with ~95% accuracy using the data of Pan-STARRS DR1.
Anna T. P. Schauer et al 2020 ApJ 904 145
Estimates show that, to detect Population III star formation regions at high redshift (i.e., the first stars), an infrared telescope based on the Moon would need a primary mirror of 100 m in diameter.
Jason D. Rhodes et al 2020 AJ 160 261
A logical endpoint for galaxy surveys is a 280-m telescope with a marginally resolved focal plane of 20 deg2 operating at L2, which could potentially exhaust the cosmological information content of galaxies in a 10 yr survey.
Elishevah M. M. E. van Kooten et al 2020 Planet. Sci. J. 1 67
New analysis of isotopes in lunar rocks suggest that the Moon was veiled by a thin atmosphere during mare basalt eruption events spanning at least from 3.8 to 3 billion years ago.
Dennis Zaritsky et al 2020 ApJL 905 L3
15 stars have been discovered in the H3 survey that lie, in projection, near the tip of the trailing gaseous Magellanic Stream; these likely represent debris of past Magellanic Cloud encounters.