Qian Yang et al 2018 ApJ 862 109
21 new changing-look active galactic nuclei — AGN that exhibit the appearance or disappearance of broad Balmer emission lines within a few years — have been discovered, doubling the number of these objects known.
S. Ansoldi et al 2018 ApJL 863 L10
MAGIC very-high-energy observations of the blazar TXS 0506+056, combined with detailed jet modeling, corroborate a connection between the object’s high-energy radiation and the neutrino detected from its direction.
M. Lazzarini et al 2018 ApJ 862 28
Multiwavelength observations from NuSTAR, Chandra, and Hubble are used to infer compact object type, spectral type of the donor star, and age for 15 high-mass X-ray binary candidates in the disk of M31.
N. Erasmus et al 2018 ApJS 237 19
VRI spectrophotometry of 1003 main-belt asteroids suggests a population with an average elongation b/a = 0.74 ± 0.07 and also shows that this is independent of asteroid size and taxonomy.
Anthony L. Piro 2018 AJ 156 54
The combined tidal torques on an exoplanet from a moon and its parent star can force the planet to spin asynchronously with respect to both its moon and its host, tidally heating the exoplanet.
J. Christopher Mihos et al 2018 ApJL 863 L7
In the Leo I group, BST1047+1156, the lowest surface brightness object ever detected via integrated light, may be a disrupting tidal dwarf or a preexisting galaxy with a recent burst of star formation.