Andrés E. Piatti 2017 ApJL 846 L10
A stellar density profile of 47 Tucanae out to ~5.5 times its tidal radius reveals that this globular cluster’s envelope is a halo-like, nearly constant low-density structure.
Steven R. Majewski et al 2017 AJ 154 94
APOGEE, part of SDSS-III, has completed its systematic, homogeneous spectroscopic survey sampling all major populations of the Milky Way, gathering half a million high-resolution infrared spectra for 146,000 stars.
G. B. Lansbury et al 2017 ApJ 846 20
Eight NuSTAR sources with extremely hard X-ray spectra are identified as highly obscured active galactic nuclei, including three robust Compton-thick AGN at low redshift and one likely one at higher redshift.
A. K. Dupree et al 2017 ApJL 846 L1
Two populations of rotating stars — one rapidly rotating, and the other younger and slowly rotating — have been discovered in the young (~200 Myr) Large Magellanic Cloud (LMC) cluster NGC 1866.
Sarah Millholland and Gregory Laughlin 2017 AJ 154 83
A supervised learning algorithm has been used to detect 60 high-probability non-transiting short-period giant planets in the Kepler field, after classifying ~140,000 Kepler stars.
Young-Soo Jo et al 2017 ApJS 231 21
The first all-sky map of far-ultraviolet fluorescent molecular hydrogen emission in the Milky Way covers 76% of the sky and allows for future exploration of the galaxy’s interstellar medium.