Xiaodian Chen et al 2018 ApJS 237 28
The first all-sky mid-infrared variable-star catalog based on Wide-field Infrared Survey Explorer five-year survey data contains 50,282 carefully and robustly selected periodic variables, of which 69% are new.
Brett Salmon et al 2018 ApJL 864 L22
The Reionization Lensing Cluster Survey (RELICS) Hubble Treasury program has uncovered SPT0615-JD1, a fortuitous z ~ 10 galaxy candidate stretched into an arc over ~2.5″ by the effects of strong gravitational lensing.
Keivan G. Stassun et al 2018 AJ 156 102
The Transiting Exoplanet Survey Satellite (TESS) will obtain 2-min-cadence observations of 200,000–400,000 stars selected for their likelihood of hosting small, detectable transiting planets.
Mandy C. Chen et al 2018 ApJ 863 135
The mass of a supermassive black hole in the brightest cluster galaxy of MACS J1149.5+2223 at z = 0.54 is estimated using one of the multiply lensed images of a background spiral galaxy at z = 1.49.
Jinhyuk Ryu and Myung Gyoon Lee 2018 ApJL 863 L38
Two new globular clusters, RLGC 1 and RLGC 2, have been serendipitously discovered in infared survey data in the far-half region of the Milky Way, and they may belong to the halo of the Milky Way.
A. R. G. Santos et al 2018 ApJS 237 17
Photometric Kepler data of 87 solar-type stars is used to to detect and characterize stellar magnetic cycles through asteroseismology; >60% of the stars show evidence for (quasi-)periodic variations in their frequency shifts.