BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Kathryn Grasha (ANU): Anchoring the Extragalactic Abundance Scale
DTSTART:20260528T120000Z
DTEND:20260528T130000Z
DTSTAMP:20260515T034900Z
UID:indico-event-2125@indico.uu.se
DESCRIPTION:Title: Anchoring the Extragalactic Abundance Scale Speaker: 
 Kathryn Grasha Affiliation: Australian National University Room: Å101
 190 Time: 14:00-15:00 Abstract:Cosmic chemical evolution is inferred al
 most entirely from emission lines of photoionised nebulae\, yet the abunda
 nce scale underlying these diagnostics remains fundamentally uncertain. In
  this talk\, I will present a program to establish absolute benchmarks for
  the extragalactic abundance scale by unifying stellar and nebular chemica
 l measurements in HII regions located in the Magellanic Clouds and nearby 
 universe galaxies. Using data from the WiFeS IFU spectrograph on the ANU 2
 .3m and the UVES spectrograph on the VLT\, we directly connect precise ste
 llar compositions to self-consistent modelling of the surrounding ionized 
 gas.By anchoring emission-line diagnostics to physically constrained abund
 ances\, we are calibrating the impact of stellar enrichment on nebular spe
 ctra and starting to provide robust reference standards for interpreting g
 alaxy observations across cosmic time. This talk will show results from th
 e first data release and discuss the initial findings and implications\, r
 epresenting a critical step toward placing galaxy evolution studies on a s
 ecure chemical foundation. \n\nhttps://indico.uu.se/event/2125/
LOCATION:Å101190
URL:https://indico.uu.se/event/2125/
END:VEVENT
END:VCALENDAR