P. Kharb et al 2019 ApJ 871 249
VLBI observations of the Seyfert type 2 galaxy KISSR 434 reveal a long (~500 light-years) jet that is curved, possibly due to precession rather than ram-pressure bending from a rotating interstellar medium.
Steven Villanueva Jr. et al 2019 AJ 157 84
Semianalytic estimates predict 241 single-transit events caused by planets will be detectable in TESS postage-stamp images at a signal-to-noise ratio of S/N ≥ 7.3, and at least 977 more will be visible in the full frame images.
E. J. L. Larson 2019 ApJL 872 L23
The organic haze enshrouding Titan follows a seasonal cycle both due to Saturn’s orbital eccentricity and its 27° obliquity; simulations suggest the cycle is amplified by a factor of 2 with production as a function of solar UV.
James R. A. Davenport et al 2019 ApJ 871 241
Analysis of a sample of 347 Kepler flare stars shows that flare activity decreases for all low-mass stars as they spin down, and thus with age.
D. S. Aguado et al 2019 ApJS 240 23
Twelve years after first light, SDSS is putting out its 15th data release — which includes 4,824 Mapping Nearby Galaxies at APO (MaNGA) data cubes, as well as new data analysis and visualization products.
Kosuke Namekata et al 2019 ApJ 871 187
An analysis of 5,356 active solar-type stars observed by Kepler reveals that starspot lifetimes are ~10–350 days when spot areas are 0.1%–2.3% of the solar hemisphere, shorter than expected in analogy with the Sun.