Juan P. Farias et al 2020 ApJ 900 14
A series of tests are used on Gaia DR2 data to identify runaway/walkaway stars from the Orion Nebula Cluster. 25 ejection candidates are found, including 10 that satisfy the strictest 3D traceback conditions.
Samson A. Johnson et al 2020 AJ 160 123
New models predicts that the Nancy Grace Roman Space Telescope will, through the use of gravitational microlensing, detect around 250 free-floating planets with masses down to that of Mars.
Takaaki Tanaka et al 2020 ApJL 900 L5
Chandra X-ray observations of the supernova remnant RX J1713.7−3946 reveal that its forward shock is colliding with the dense surrounding gas of the interstellar medium, rapidly accelerating particles in the collision region.
Tawny Sit and M. K. Ness 2020 ApJ 900 4
The ages and abundances are inferred for 125,367 stars in the Milky Way, including 1,654 bulge stars. Stars in the bulge are about twice as old (~8 Gyr), on average, compared to those in the solar neighborhood.
Brad W. Lyke et al 2020 ApJS 250 8
The 16th (and final) data release of SDSS-IV’s eBOSS survey includes the largest selection of spectroscopically confirmed quasars to date. The catalog contains 750,414 quasars and is estimated to be 99.8% complete.
Kei E. I. Tanaka et al 2020 ApJL 900 L2
ALMA observations of a proto-binary system reveal salt, hot water, and silicon compounds in the individual protostellar disks at ~100 au; these “hot-disk” lines may be common in innermost disks around massive protostars.