Izumi Hachisu and Mariko Kato 2019 ApJS 242 18
Analysis of the light curves of a set of 32 galactic classical novae — thermonuclear explosions of white-dwarfs — provides the distances and white-dwarf masses using a single, uniform method.
Maria A. Loukitcheva et al 2019 ApJL 877 L26
ALMA observations of a quiet-Sun region reveal distinct particularly dark and cool areas in the millimeter maps with temperatures as low as 60% of the normal quiet Sun at 3 mm, something not seen in other data.
Joel Leja et al 2019 ApJ 877 140
New fits to the photometry of 58,461 galaxies from the 3D-HST catalogs at 0.5 < z < 2.5 imply an older, more quiescent universe than found by previous studies at these redshifts.
Billy Edwards et al 2019 AJ 157 242
Simulations of instrument performance show that ESA’s Ariel, a space telescope planned for launch in 2028, may be able to characterize the atmospheres of ~2,000 known and predicted TESS exoplanets.
Kun Xu and Xiang-Dong Li 2019 ApJ 877 138
The extremely slow spin of the slowest isolated pulsar, 1E 161348−5055, was likely caused by interactions with a supernova fallback disk that surrounds it; the spin rate can be used to estimate the mass of the disk.
Maria A. Loukitcheva et al 2019 ApJL 877 L26
New ALMA images of a quiet-Sun region reveal the presence of distinct particularly dark/cool areas in the millimeter maps with temperatures as low as 60% of the normal quiet Sun.