3. 11. 2020: Astrodebata o oddaljenih galaksijah

Torek, 03 November 2020

V torek, 3. novembra bo imel Darko Donevski (postdoctoral research fellow, SISSA) astrodebato z naslovom Knocking on the Doors of Dusty Giants in the Distant Universe. Predavanje bo potekalo preko Zooma in se začne ob 14. uri. Predavanje bo v angleščini. Vljudno vabljeni!

Astrodebate organizira Astronomska skupina na Fakulteti za matematiko in fiziko Univerze v Ljubljani.

Slika: Dvanajst galaksij (rdeče pike v povečanih okvirčkih) v oddaljeni jati z660D. Avtorstvo slike: NAOJ/Harikane et al. Povzetek/Abstract:

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.