Joshua Krissansen-Totton et al 2018 AJ 156 114
~10 transit observations of a planet with JWST may be sufficient to detect carbon dioxide and constrain methane abundances sufficiently well to rule out known, nonbiological methane production scenarios.
Sanjaya Paudel et al 2018 ApJS 237 36
The largest publicly available catalog of interacting dwarf galaxie is presented, including 177 nearby merging dwarf galaxies of stellar mass M* < 1010 M⊙ and redshifts z < 0.02.
Guangwen Chen et al 2018 ApJ 864 72
The ring structures of collisional ring galaxies — formed through off-center collisions between a target galaxy and an intruder dwarf galaxy — are found to be strongest for those with small bulge-to-disk mass ratios.
Jaehan Bae et al 2018 ApJL 864 L26
Simulations demonstrate that that protoplanetary disks with a giant planet can reveal diverse morphology in (sub)millimeter continuum, including structures with multiple gaps and rings.
Ahmed Qureshi et al 2018 ApJ 864 65
Observations of a bifurcation in the stellar spin-period in young clusters support calculations showing that planet consumption by a star will spin up the star; the spun-up star will later spin down due to magnetic braking.
David P. Bennett et al 2018 AJ 156 113
The planetary microlensing event MOA-2011-BLG-291 has a source star that is redder (or brighter) than the bulge main sequence, suggesting that it may not lie in the galactic bulge.