How irregular rotation can change a galaxy’s metal content
It’s difficult to tell how the individual stars of a galaxy rotate. What can we find out just from their metal content?
Satellites of satellites should exist. Let’s go look for them.
Today’s paper makes predictions for the yet-to-be-observed dwarf galaxy population around Andromeda’s satellite galaxy, M33. It provides scientific justification for a future mission with WFIRST.
Understanding Dwarf Galaxies with a Heart of Steel
Hydrodynamical simulations shed new light on the metallicity of stellar populations in dwarf galaxies.
How to Diagnose the Light from Early Galaxies
Understanding the physics of a certain emission line will allow astronomers to study galaxies that existed a long time ago far, far away.
How the Milky Way Got its Spiral Arms
The spiral arms of galaxies are among the most recognizable galactic features, yet we still know little about their precise formation mechanism. Today’s paper leverages new data from the Gaia mission to test some of the leading theories.
Astrobites at ASA: Astronomy Down Under!
The annual meeting of the Astronomical Society of Australia happened last week; here’s a short summary of some of the incredible science happening Down Under!