The speeding binary that shouldn’t exist
A mysterious pair of stars speeding through the outskirts of our galaxy together puzzles astronomers
Did stripped stars re-ionize the Universe?
We still lack a good understanding of the source of ionizing photons in the early Universe. Can envelope-stripping from a binary companion help stars to re-ionize the early universe?
HD 59686Ab: How Did It Get There?
The circumprimary planet HD 59686 raises many questions about formation and stability in binary systems.
One Magnified Starburst Galaxy
Astronomers study a gravitationally lensed emission line galaxy, with implications for the characteristics of early galaxy populations.
Imaged Companion Drives Spiral Arms in Disk
Using 14 years of high resolution near-infrared imaging, radio observations of molecular gas, and a hydrodynamic simulation the authors show that spiral arms seen in the protoplanetary disk around HD 100453 A are caused by its M-dwarf companion.
A (Non?)-Magnetic White Dwarf Binary
A white dwarf binary system that sometimes shows evidence of a magnetic field — but only some of the time.