Sean M. Mills et al 2019 AJ 157 145
A radial-velocity study is conducted for three systems (Kepler-25, -65, and -68) with similar architectures: a giant-planet companion exterior to a compact, multiply transiting system of sub-Neptune planets.
Alin Razvan Paraschiv and Alina Donea 2019 ApJ 873 110
Data analysis on penumbral geyser-like flaring structures in the Sun’s corona show that they produce recurring jets and can be long-lived, quasi-stable, and act as coronal sources for Type-III radio bursts.
Petr Pokorný and Marc Kuchner 2019 ApJL 873 L16
Dust modeling suggests that the narrow circumsolar ring of dust observed by the Helios and STEREO spacecrafts to be associated with Venus’s orbit is most likely produced by a population of Venus co-orbital asteroids.
Mathew Schofield et al 2019 ApJS 241 12
The target list of solar-type stars to be observed in short-cadence (2 minutes) for asteroseismology by the NASA TESS mission is comprised of bright, cool main-sequence and subgiant stars.
Nick Choksi et al 2019 ApJ 873 100
Models indicate that black-hole binaries that are ejected and later merge ex situ form in star clusters of a characteristic mass M ~ 105.3 M☉, whereas binaries that merge in situ form in more massive clusters, M ~ 105.7 M☉.
Shoya Kamiaka et al 2019 AJ 157 137
Asteroseismology of Kepler-408 reveals that the stellar inclination is ~42° relative to the orbit of its 0.86-Earth-radius planet. Kepler-408b is by far the smallest planet known to have a significantly misaligned orbit.