Dusty and Bursty: what Submillimeter Galaxies can teach us about the universe
Faglige nøgleord: astrofysik, rummet, galakser
Oplæg tilgængeligt på: Dansk og engelsk
When we look out into space, we are actually looking back in time. Around 10 billion years ago, the galaxies were very dusty, making them hard to observe in visible light. However, most of the stars we see today, were also formed at this time, at a much faster rate than today. The galaxies are therefore known as dusty, starburst galaxies. Because of the dust and how far away these galaxies are, we can only see them in infrared to submillimeter light. Therefore, they are also known as submillimeter galaxies (SMGs). When we look out into the universe, we see that the SMGs are located in two different environments: isolated galaxies (or field galaxies) and in dense regions with many other galaxies (clusters). This is similar to the galaxies of today, but we do not know if the environment has an impact on the evolution of galaxies, making SMGs ideal candidates to investigate the early effects of environment.