Evan N. Kirby et al 2015 ApJ 814 L7
The Triangulum II galaxy has been identified as being dark-matter dominated. If it is in dynamical equilibrium, then it has the largest mass-to-light ratio of any non-disrupting galaxy known.
Liang Zhang et al 2015 ApJ 813 90
Swift/XRT and NuSTAR observations of black-hole candidate XTE J1908+094, during its 2013–2014 outburst, suggest the presence of an advection-dominated slim disk and relativistic jets.
C. Kay and M. Opher 2015 ApJ 811 L36
After CMEs travel a distance of roughly 10 solar radii, the background solar wind has negligible influence on their deflection and they propagate with roughly constant angular momentum.
J. D. Hartman et al 2015 AJ 150 168
Transiting planets have been found around 4 separate stars by the HATNet Survey. One of these, the hot Saturn around HAT-P-51, is a promising target for measuring the Rossiter-McLaughlin effect.
Travis S. Metcalfe et al 2015 ApJ 811 L37
Kepler observations of the binary system 16 Cyg A&B are used to demonstrate that stellar properties like age and composition can be reliably constrained with asteroseismic analysis.
Victor P. Debattista et al 2015 ApJ 812 L16
Measurement of the stellar velocities of red giant stars in the inner Milky Way suggest the presence of a thin, rapidly rotating, nuclear disk perpendicular to the galactic bar and extending to ~1 kpc.