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SUMMARY:Leveraging CANFAR and the ALMA archive to create SALVAGE - II: the
  effect of AGN feedback on central molecular gas
DTSTART;VALUE=DATE-TIME:20261028T173500Z
DTEND;VALUE=DATE-TIME:20261028T174500Z
DTSTAMP;VALUE=DATE-TIME:20261026T232723Z
UID:indico-contribution-3655@nyx.physics.mcgill.ca
DESCRIPTION:Speakers: Scott Wilkinson (Queen's University)\nUnderstanding 
 the mechanisms that drive and halt star formation requires an assessment o
 f both the stellar and gaseous components of a large statistical sampling 
 of galaxies.  For Canadian astronomers\, large optical surveys have adequa
 tely serviced the stellar components\, but large samples of resolved molec
 ular gas observations are challenging to acquire. However after 13+ years 
 of operations\, the ALMA Science Archive has accumulated an untapped wealt
 h of molecular gas observations waiting to be analyzed as an ensemble. Ena
 bled by the CANFAR Science Platform\, the SDSS-ALMA Legacy-Value Archival 
 Gas Exploration (SALVAGE) dataset encompasses ~300 galaxies with optical d
 ata from the Sloan Digital Sky Survey (SDSS) and CO(1-0) maps from ALMA. T
 ogether\, these products allow for a  “semi-resolved” perspective of t
 he gas and stars\, meaning that the inner ~2kpc (set by the SDSS spectrosc
 opic fibre diameter) and outer regions can be independently studied. \n\nI
 n this presentation\, I will use SALVAGE to quantify how feedback from an 
 active galactic nucleus (AGN) affects the molecular gas. Although simulati
 ons show that AGN feedback can remove gas from galaxies\, nearly all obser
 vational studies of low-redshift AGN show no evidence of gas depletion. Re
 cent works have found that **AGN can only remove gas from the central regi
 ons**\, but are limited to small samples. SALVAGE allows us to test this r
 esult with substantially larger statistics. Using a sample of 70 AGN and m
 atched non-AGN controls\, I will assess whether AGN hosts show evidence fo
 r reduced central molecular gas\, providing observational constraints on t
 he role of AGN in galaxy evolution.\n\nhttps://nyx.physics.mcgill.ca/event
 /587/contributions/3655/
LOCATION:Online 
URL:https://nyx.physics.mcgill.ca/event/587/contributions/3655/
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