B. van der Holst et al 2019 ApJL 872 L18
Predictions of the first Parker Solar Probe close encounter suggest that the probe was close to the heliospheric current sheet, the trajectory was in the slow solar wind, and the plasma along the trajectory was unstable.
Karina T. Voggel et al 2019 ApJ 871 159
The supermassive black hole number density caused by stripped galaxy nuclei is estimated at 0.002–0.008 Mpc−3, representing a significant fraction (8%–32%) of the supermassive black hole density in the local universe.
Sven Köppel et al 2019 ApJL 872 L16
A nonlinear universal relation is shown to exist between the threshold mass for prompt collapse of a neutron star (NS) and the maximum compactness; from this, future observations may constrain the NS equation of state.
Michael Greklek-McKeon and Drake Deming 2019 AJ 157 77
The EVEREST pipeline is used to evaluate false-positive exoplanet candidates from the K2 mission, identifying 6 systems previously flagged as planetary candidates that are instead eclipsing binaries.
Abhimat Krishna Gautam et al 2019 ApJ 871 103
An 11.5-year adaptive-optics study of variability at the galactic center reveals that roughly half the sample shows variability: ~52% of known early-type young stars and ~43% of known late-type giants.
F. Massaro et al 2019 ApJS 240 20
Despite their radio morphological classification and/or their optical classification, radio galaxies in the local universe tend to live in galaxy-rich large-scale environments that have similar characteristics and richness.