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SUMMARY:DESI as a survey for galaxy evolution: galaxy scaling relations an
 d the chemical enrichment of galaxies
DTSTART:20261118T140000Z
DTEND:20261118T150000Z
DTSTAMP:20261115T005600Z
UID:indico-event-18@conference.astro.dur.ac.uk
DESCRIPTION:Speakers: Dirk Scholte (Edinburgh)\n\n\n\n\n\nOver the past fi
 ve years\, the Dark Energy Spectroscopic Instrument (DESI) has measured sp
 ectra of more than 47 million galaxies\, the largest spectroscopic sample 
 ever assembled. Although built for cosmology\, DESI is also transforming t
 he study of galaxy evolution. I will begin with an overview of DESI as a g
 alaxy evolution survey\, based on work from the DESI Galaxy and Quasar Phy
 sics Working Group\, to show how the selection functions of DESI’s galax
 y and quasar samples shape the physical properties we can study. I will th
 en turn to two topics: (1) Galaxy scaling relations over 5 orders of magni
 tude in stellar mass\, with a particular focus on the stellar mass functio
 n. (2) How galaxies build up their heavy elements. I will present ‘gold 
 standard’ direct-method chemical abundances for 50\,000 galaxies and wha
 t they reveal about chemical enrichment. Finally\, I will introduce the mo
 st metal-poor galaxies in the nearby Universe\, which we discovered in DES
 I Data Release 2\, and discuss evidence that these galaxies are puzzlingly
  gas rich.\n\n\n\n\n\n\n\n \n\n\n\n\nhttps://conference.astro.dur.ac.uk/e
 vent/18/
LOCATION:OCW017
URL:https://conference.astro.dur.ac.uk/event/18/
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