I. Martín-Navarro and M. Mezcua 2018 ApJL 855 L20
A loose coupling is found between star formation history and black hole mass in a sample of 127 low-mass galaxies, seemingly suggesting that AGN activity does not dominate baryonic cooling in such galaxies.
Heath V. Shipley et al 2018 ApJS 235 14
New Hubble multi-wavelength photometric catalogs are presented for the Hubble Frontier Fields and associated parallels; additional data further expand these catalogs, forming a robust total data set for the Fields.
Richard R. Radick et al 2018 ApJ 855 75
Patterns of variation for the Sun and 72 Sun-like stars are explored through nearly three decades of data. The Sun appears to be somewhat unusual in its comparatively smooth, regular activity cycle.
I. Martín-Navarro and M. Mezcua 2018 ApJL 855 L20
Observations of 127 low-mass galaxies indicate a loose coupling between star formation history and black hole mass, suggesting that AGN activity does not dominate baryonic cooling in low-mass galaxies.
N. Haghighipour et al 2018 ApJ 855 60
Studies of comet impacts by meter-sized bodies suggest that the activities of current main-belt comets could be driven by impacts at multiple sites, at which deep impact craters form in porous materials.
Przemek Mróz et al 2018 AJ 155 121
A candidate free-floating, Neptune-mass planet has been discovered in the galactic disk as a result of a gravitational microlensing event detected by the Optical Gravitational Lensing Experiment (OGLE).