Dary Ruíz-Rodríguez et al 2019 AJ 157 237
High-resolution ALMA observations of the circumbinary disk orbiting V4046 Sgr, a ~20-Myr-old, actively accreting binary star system, reveal a dust ring and gap structures that may be shaped by a circumbinary planet.
Juhyung Kang et al 2019 ApJL 877 L9
A new model suggests that spiral wave patterns recently detected in sunspot umbrae may be caused by slow magnetoacoustic waves driven below the solar surface.
E. T. Dunham et al 2019 ApJ 877 41
New models of the dwarf planet Haumea’s shape, structure, and composition suggest this body has a core of hydrated silicates and a thick (67 to 167 km thick!) ice crust.
Athanasios Papageorgiou et al 2019 ApJS 242 6
The physical properties — including temperature ratio, the sum of relative radii, and orbital inclination — are determined for 2,281 eclipsing binaries from light-curve data from the Catalina Sky Survey.
Wanying Kang 2019 ApJL 877 L6
3D modeling suggests that a high-obliquity planet’s stratosphere could be >3 orders of magnitude moister than a low-obliquity equivalent, indicating water escape on high-obliquity planets may cause rapid loss of habitability.
Nicholas Z. Rui et al 2019 ApJ 877 37
Hubble infrared observations of stars in the Quintuplet star cluster — a massive star cluster near the galactic center (GC) — provide evidence that young massive clusters in the GC dissolve on a several-megayear timescale.