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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20230601T103000
DTEND;TZID=Atlantic/Canary:20230601T113000
UID:iactalks-1679
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1679
CREATED:2023-06-01T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Fuelling supermassive black holes with galaxy interactions
DESCRIPTION:Fuelling supermassive black holes with galaxy interactions\nDr.
  Sandra Raimundo\n\nInteractions between galaxies often leave an imprint t
 hat is observable  in the aftermath of the interaction, such as tidal feat
 ures or  perturbations in the stellar and gas kinematics of the galaxies. 
  Sometimes these perturbations can be structures (i.e. gas or stars) that 
  are strongly misaligned or even rotating in the opposite direction with  
 respect to the main stellar body of the galaxy. It has been suggested  by 
 simulations that misalignment may drive galaxy gas all the way to the  cen
 tral supermassive back hole, one of the ingredients needed to fuel  black 
 hole activity. I will show observational evidence that galaxy  interaction
 s, such as major mergers, minor mergers or galaxy flybys,  indeed provide 
 the necessary conditions to fuel black hole activity and  growth. I will p
 resent a method that uses kinematically misaligned gas  to observationally
  identify galaxies that went through an interaction.  With this method we 
 have recently shown that galaxies that have  misaligned gas have a higher 
 observed fraction of active black holes.  This is the first time that an o
 bservational connection is seen between  the process of formation and/or p
 resence of misaligned structures and  the fuelling of active supermassive 
 black holes. I will discuss the  implications of this black hole fuelling 
 mechanism for different galaxy  types and their evolution.
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