Astro Blog articles for Herschel

Beacons or Fireworks?

Posted: 30 Mar 2012

In the local, old Universe we only see intense bursts of star formation when galaxies collide - but the young Universe was a very different place, it seems. Georgios Magdis is using the Herschel and VLA telescopes to measure the amount of gas in massive galaxies 1-4 billion years after the Big Bang, and finding that mergers weren't so important back then. Some galaxies had so much gas they could sustain long periods of star formation, without the need for a merger to compress the gas at all - they look more like beacons than fireworks. Phil Marshall caught up with Georgios and asked him a few questions about his work.