Morphological transformations and AGN feedback

31 Pages·2016·32.03 MB·English

Morphological transformations and
AGN feedback

Yohan Dubois – Institut d’Astrophysique de Paris (IAP)
Collaborators:
Rebekka Bieri, Sandrine Codis, Julien Devriendt, Raphaël Gavazzi, Mélanie Habouzit,
Sugata Kaviraj, Taysun Kimm, Clotilde Laigle, Sébastien Peirani, Christophe Pichon,
Joaquin Prieto, Joe Silk, Adrianne Slyz, Marta Volonteri, Charlotte Welker
Horizon-AGN simulation
25 Mpc/h z=0
http://horizon-simulation.org
Morphological transformations and
AGN feedback
1)  What SMBHs do for morphology
2)  What morphology does for SMBHs
The old days
Without AGN: massive blue spirals are everywhere!
Horizon-MareNostrum: Ocvirk, Pichon, Teyssier (2008), Devriendt et al (2010)
Horizon-AGN
Morphological variety
Illustris
Eagle
The Horizon-AGN simulation
•  Simulation content
–  Run with Ramses (AMR) Teyssier (2002)
–  L =100 Mpc/h
box
–  10243 DM particles M =8x107 M
DM,res sun
–  Finest cell resolution dx=1 kpc
–  Gas cooling & UV background heating
–  Low efficiency star formation
–  Stellar winds + SNII + SNIa
–  O, Fe, C, N, Si, Mg, H
–  AGN feedback radio/quasar mode
•  Outputs
–  Standard outputs ~200 Myrs
–  Star particles are backed up every 10-20 Myr
–  Lightcones (1°x1°) performed on-the-fly
•  Dark Matter (position, velocity)
Dubois et al, 2014, 2016
•  Gas (position, density, velocity, pressure, chemistry)
Chisari et al, 2015, 2016
•  Stars (position, mass, velocity, age, chemistry)
Codis et al, 2015
•  Black holes (position, mass, velocity, accretion rate)
Kaviraj et al, 2015, 2016
•  z=0 using 10 Mhours on 4096 cores
Peirani et al, sub.
•  150 000 galaxies per snapshot (> 50 part.)
Suto et al, 2017
•  7.109 leaf cells (more than Illustris or Eagle) Volonteri et al, 2016
Welker et al, 2014, 2016
http://horizon-simulation.org/
You can find me on Youtube
A visual inspection of the impact of AGN feedback on
large-scale structures
Green: gas density / Red: temperature / Blue: metallicity
Horizon-noAGN Horizon-AGN
z=2.5 z=2.5
+ one DM-only simulation
Motivation for AGN feedback
Galaxy mass functions in the Horizon-AGN project
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Kaviraj, Laigle et al, arXiv:1605.09379
HAGN HnoAGN HAGN HnoAGN HAGN HnoAGN
Dubois et al, 2016
Fraction of Ellipticals
Elliptical galaxy if V /σ<1
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Log Stellar Mass
Dubois et al, 2016