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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20231123T103000
DTEND;TZID=Atlantic/Canary:20231123T113000
UID:iactalks-1730
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1730
CREATED:2023-11-23T10:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The role of metals from molecular clouds to galactic discs
DESCRIPTION:The role of metals from molecular clouds to galactic discs\nPiy
 ush  Sharda\n\nFrom  the time the first stars formed to the present-day, m
 etals have  witnessed the assembly of structure in the Universe in great d
 etail.  Although metals only form in stars and stellar remnants, they are 
  ubiquitously present everywhere. However, we still do not understand how 
  metals are effectively dispersed throughout the Universe, and the  variou
 s roles they play in shaping galaxies. In this talk, I will  present a mul
 ti scale approach to study the role of metals in galaxy  evolution, from m
 olecular clouds to galactic discs. On smaller scales, I  will focus on phy
 sical processes that shape up the initial mass  function (IMF, with a part
 icular emphasis on metal-free and metal-poor  environments) that directly 
 set the integrated yield of metals in the  first and early galaxies. I wil
 l discuss results from high resolution  radiation chemo-magnetohydrodynami
 c simulations that study the impact of  turbulence, radiation feedback and
  magnetic fields on the primordial  IMF, and describe analytical models of
  dusty molecular clouds that  explain the transition in the IMF as the met
 al abundance grows over  cosmic time. On larger scales, the talk will
  cover the physics of  gas-phase metal distribution in galaxies. Using a c
 ombination of  spatially-resolved gas-phase metallicity measurements and n
 ovel  semi-analytical models, I will present recent results that advance o
 ur  understanding of metallicity gradients in (late type) galaxies. In  pa
 rticular, I will show how self-consistently incorporating metal  dynamics 
 into galaxy evolution models is key to explaining the observed  trends in 
 metallicity gradients with galaxy mass, metallicity, and  kinematics. I wi
 ll end by highlighting how ongoing/upcoming astronomical  facilities will 
 transform our understanding of metal evolution in  galaxies.
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