F. Annibali et al 2019 ApJ 883 19
New Hubble imaging of a stream-like system associated with the dwarf galaxy DDO 68 resolves individual stars within the stream, confirming this striking example of hierarchical merging in action at dwarf-galaxy scales.
Jennifer G. Winters et al 2019 AJ 158 152
Recent TESS data has revealed LTT 1445Ab, the second nearest transiting exoplanet system found to date, which consists of a planet orbiting a star in a system of three mid-to-late M dwarfs in a hierarchical configuration.
Ethan Kruse et al 2019 ApJS 244 11
Application of a new search algorithm to the K2 Kepler mission extension data reveal 818 transiting planet candidates — of which 374 were undiscovered by prior searches — and 579 eclipsing binary systems.
Javier A. Ahumada et al 2019 ApJ 882 171
Gemini-South observations are used to identify four white dwarves in the centers of faint and extended planetary neubulae — stars that are likely the central ionizing sources of the nebulae.
Lucas A. Bignone et al 2019 ApJL 883 L5
A simulated Milky Way analog discovered in the EAGLE suite of cosmological hydrodynamical simulations may help us to understand the early evolutionary history of the Milky Way.
G. Zhou et al 2019 AJ 158 141
From a sample of bright main-sequence stars, 31 giant-planet candidates are found, suggesting a net hot Jupiter occurrence rate of 0.41 ± 0.10% that does not show statistically significant trends with stellar mass.