|The Australia Telescope National Facility Colloquium|
|15:00-16:00 Wed 15 Mar 2017|
Marsfield Lecture Theatre
Steven Janowiecki: Gas and star formation in galaxies: the role of environment and (almost) dark galaxies
I will talk about recent work studying gas and star-formation in samples of galaxies. In particular, using the new xGASS survey, we have found unusually gas-rich and star-forming central galaxies in small groups, which we interpret as evidence of feeding from the cosmic web. At the other extreme, the ALFALFA HI survey is finding gas-rich galaxies with almost invisible stellar populations. These (almost) dark galaxies are exceptionally inefficient at forming stars and may be related to the recently re-discovered class of "ultra-diffuse" galaxies.
This loads a font easier to read for people with dyslexia.
This renders the document in high contrast mode.
This renders the document as white on black
This can help those with trouble processing rapid screen movements.