Colin J. Burke et al 2020 ApJL 894 L5
New Gemini spectroscopy of the blue compact dwarf galaxy PHL 293B reveals that its unusual broad emission lines have begun to fade after a decade of persistence, indicating they were likely due to a long-lived stellar transient.
Petr Pokorný et al 2020 ApJ 894 114
New analysis of regions within 5° of the two lunar poles shows that the poles are easily accessible by meteoroid impacts, including the permanently shadowed regions within deep lunar craters.
Veselin B. Kostov et al 2020 AJ 159 253
The Transiting Exoplanet Survey Satellite (TESS) has found its first planet orbiting around an eclipsing binary star system. The planet is ~6.9 Earth radii and has an orbital period of 95.2 days.
Jeong Hwan Lee et al 2020 ApJ 894 75
46 ultra-diffuse galaxies are found in the Abell 370 cluster; the observations suggest that multiple origins may contribute to the formation and evolution of ultra-diffuse galaxies in massive galaxy clusters.
Shaobo Zhang et al 2020 ApJS 248 15
A supervised machine-learning algorithm is used to identify outflow features in a survey of molecular outflows across a dark cloud complex, finding 130 outflow candidates inside dense molecular clouds.
Yumi Bamba et al 2020 ApJ 894 29
Analysis of multiple observational datasets for the largest X9.3 solar flare in solar cycle 24 shows that it may have been triggered by the intrusion of a major negative-polarity region into an opposite-polarity region.