Going Green… On a Galactic Scale!
Our Milky Way seems to be passively evolving towards the red sequence… very efficiently!
The Implications of the Redshift Evolution of AGN Bias
Using measurements of the projected correlation function, Allevato et al. study the evolution of X-ray selected, active galactic nuclei (AGN) in order to help understand how these massive, central black holes are triggered and where they fit in a larger cosmological framework.
Investigating a “Cosmic Train Wreck”
In this paper, the authors describe a system of three supermassive black holes interacting on kpc scales, and use their result to estimate the frequency of such interactions.
What lives far outside the Small Magellanic Cloud?
The SMC is one of the best studied galaxies in the sky, but there is still plenty to learn from the stars far from its center.
Dissecting a Merger between a Quasar and a ‘Green Valley’ Galaxy
Mergers play an important role in any galaxy’s evolution. A coincidental observation of a quasar and companion galaxy linked by a photoionized gas bridge offers an exclusive look at the merger process at moderate redshift.
All about bulges (and consequences for galaxy evolution)
Bulges are a familar feature of spiral galaxies, but bulges seem to come in many shapes and sizes. Studying bulges can provide clues for the role of galaxy mergers in the history of the universe.