The authors of this paper pursued a mechanism which could possibly keep dead galaxies from forming new stars: mass ejected from AGB stars moving through the galaxy could heat the ambient gas.
Satellite galaxies orbiting a host galaxy seem to display highly anisotropic angular distributions.
Spherical cows have a long and storied history in physics, but does this type of crude approximation lead to realistic conclusions in the case of star formation? The combination of large- and small- scale simulations tests this idea.
How well do the current methods of measuring the star formation rate of galaxies match then known star formation rate in simulations?
The authors use a deep survey to locate rare galaxies which were among the earliest to form.
What are these Sauron-like double-horned profiles? Read this week’s undergrad research feature to find out!
How do we reproduce what happened previously in a galaxy-galaxy interaction when all we have is one snapshot in time?
Mergers make bulges in galaxies and black holes generally live in bulges, so mergers must grow black holes – simple. That was until we found bulgeless galaxies containing growing black holes…
Large surveys of galaxies have revealed a bimodal color distribution: most galaxies tend to be red or blue, leaving a gap in the middle known as the green valley. The authors of this paper use morphologies provided by the Galaxy Zoo project to show that not all galaxies take the same quick path through the green valley.
This month’s undergraduate research post features an intriguingly-shaped disk harboring planets, and a study to unmask sneaky, previously-misclassified AGN.