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?
Hunting for Stellar Streams
A newly discovered stellar stream may be the long-searched for tidal debris from the Milky Way’s largest globular cluster.
Looking for a dark matter needle in an X-ray stack
Can an unexplained signal found inside multiple galaxy clusters tell us something about dark matter? Find out about a tantalising indirect detection by X-ray astronomers.
Where Did All the Dark Matter Go?
The discovery of a second dark matter deficient galaxy by van Dokkum et al. has caused the debate on galaxies lacking dark matter to resurface.
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.
Astrobites at AAS 233: Day 4
We report on Day 4 of the winter AAS meeting in Seattle, WA. Highlights include an exploding space cow, a discussion of data in astronomy, the latest look at the possibility of life beyond earth, and an exploration of climate impact much closer to home.