Ying D. Liu et al 2019 ApJS 241 15

A comparative study of the 2012 July and 2017 July solar eruptions suggests that superstorms are “perfect storms” in nature, i.e., a combination of circumstances results in an event of an unusual magnitude.

Željko Ivezić et al 2019 ApJ 873 111

The Large Synoptic Survey Telescope will begin regular survey operations by 2022 and, over the nominal 10 years of observations, will produce 32 trillion observations of 20 billion galaxies and a similar number of stars.

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.