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SUMMARY:Mapping the Circumgalactic Medium and Intergalactic Medium through
  Lya and MgII Emission - Yucheng Guo (Lyon)
DTSTART:20230615T103000Z
DTEND:20230615T113000Z
UID:TALK202441@talks.cam.ac.uk
CONTACT:Sandro Tacchella
DESCRIPTION:Based on the extremely deep MUSE observation on the Hubble Ult
 ra Deep Field\, we map the emission from the intergalactic medium and the 
 circumgalactic medium at the physical scale from hundreds of kpc to around
  10 kpc. We observe different physical processes occurring at different di
 stances to the galaxies. In this talk I will report our key findings: (1) 
 Within 15 kpc\, we observe the anisotropic MgII emission around galaxies a
 t z~1\, supporting a scenario of bi-polar galactic outflows. Our investiga
 tion demonstrates the prevalence of this cool and metal-enriched outflow a
 mong the population of massive galaxies. (2) For Lya emitters at z=3-4\, w
 e observe an average blueshift of the Lya line from the galaxy center to a
 pproximately 60 kpc. This provides evidence for the presence of large-scal
 e gas inflows. We map the extended Lya emission out to approximately 270 k
 pc. (3) Finally we try to reproduce the observed flux and kinematics of th
 e Lya haloes through our simulations to gain further insights.\n
LOCATION:Battcock F17 + online
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