Department of Astronomy & Physics

Knocking on Giants’ Doors: The evolution of the dust-to-stellar mass ratio in distant galaxies

Speaker: Dr. Darko Donevski (SISSA)
Time: October 2, 2020 - 3:00 PM
Location: Zoom

 

A&P Colloquium series

 

Friday, 2 Oct @3pm, via Zoom 

 

To obtain the Zoom link for this online event, please email the Astronomy and Physics Department Secretary, Shannon Rhode, at s.rhode@smu.ca.

 

Dr. Darko Donevski (SISSA)

 

Title: Knocking on Giants’ Doors: The evolution of the dust-to-stellar mass ratio in distant galaxies

Since their initial discovery 20 years ago, the distant, dusty star-forming galaxies possess a serious challenge to the theory of galaxy formation and evolution. On one hand, these massive systems form prodigious amounts of young stars but their light is heavily absorbed by dust and re-emitted in far-infrared. On the other hand, a significant number of these dusty “Giants” have been formed in the time when the Universe was very young (e.g. < 1 billion years), questioning how such a large amount of dust has been produced so rapidly. One way of answering this question is by analysing the ratio between the dust and stellar mass in distant galaxies. In this talk, I will present how to link the state-of-the-art simulations and the observations of 300 galaxies detected with ALMA, and apply the dust-to-stellar mass ratio as a tool to understand the complex processes involved in the production of dust, metals and stars in galaxy evolution.

 

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