Understanding Dwarf Galaxies with a Heart of Steel
Hydrodynamical simulations shed new light on the metallicity of stellar populations in dwarf galaxies.
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.
Going Against the Galactic Flow
An intriguing subset of galaxies exhibit counter-rotating components, that go against the flow of the majority of the stars. Today’s paper examines two such galaxies and reaches a different conclusion about each of them.
Do the Milky Way’s Stellar Streams have that Fuzzy (Dark Matter) Feeling?
Stellar streams are an excellent tool for probing the nature of Dark Matter. Today’s paper tests whether Fuzzy Dark Matter is a viable theory by evaluating the thinness of streams in the Milky Way.
Measuring Masses with Microlensing: A White Dwarf Magnifying Glass
An exciting white dwarf microlensing event is predicted to happen on November 11th, 2019! Today’s paper explains how this prediction was made and what we could learn from the microlensing event about the mass-radius relation of white dwarfs.