Mukremin Kilic et al 2017 ApJ 837 162
A detailed analysis of the white dwarfs in the local 40 pc suggests ages of 6.8–7.0 Gyr for the thin disk and 8.6–8.8 Gyr for the thick disk. The inner galactic halo is estimated to have an age of 9.1–13.9 Gyr.
Paola Oliva-Altamirano et al 2017 AJ 153 89
A study of 22 central galaxies indicates that galaxies with larger stellar mass are more likely to exhibit slow rotation than those with smaller stellar mass. No dependence on host cluster halo mass is seen, however.
H. N. Smitha et al 2017 ApJS 229 17
High-resolution Sunrise observations from 2009 — the observatory’s first balloon-borne flight — indicate a magnetic flux emergence rate in the quiet Sun that is 10x larger than fluxes estimated using Hinode data.
William Janesh et al 2017 ApJL 837 L16
An optical counterpart to AGC 249525, an ultra-compact high-velocity cloud, has been discovered that has stellar properties within the observed range of gas-poor ultra-faint dwarf galaxies in the Local Group.
K. D. Alexander et al 2017 ApJ 837 153
Radio emission is detected from tidal disruption event candidate XMMSL1 J0740−85, making it the fifth (and nearest) TDE with radio emission found. The emission likely arises from a non-relativistic outflow.
Stephen R. Kane et al 2017 AJ 153 52
The effect of orbital inclination on the Proxima Centauri planet is calculated in terms of mass, radius, atmosphere, and albedo and discussed in the context of future photometry and imaging missions.