Feedback processes, like supernova and AGN, are essential for accurately simulation galaxy formation and evolution. Today’s astrobite examines the role of radiation feedback in galaxy formation in new “radiation hydrodynamics” simulations of galaxies.
What makes galaxies stop forming stars? Is gas removed entirely, or simply heated to prevent stars from forming? Today’s paper uses observations of carbon monoxide in post-starburst galaxies to try to answer this question.
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.
How well do the current methods of measuring the star formation rate of galaxies match then known star formation rate in simulations?
As galaxies evolve they eventually stop forming stars. There are a host of (sometimes violent) processes that can end star formation in galaxies. The authors examine how galaxy mass plays a role in stopping star formation for nearby galaxies.
The number and luminosity distribution of white dwarfs stars can be used to help figure out the past history of the Galactic halo.
Can bars in a galaxy cause radial migrations of stars? The simulations say yes, but these observations suggest otherwise…
The evolution of galaxies from one type to another is not well understood. A galaxy’s environment plays a key role in its evolution. This is especially important for galaxies in galaxy clusters, which can strip them of their gas. The authors in today’s Astrobite explore six new, dramatic examples of galaxies being stripped of their gas.