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SUMMARY:The formation of large galactic disks: survival or revival? - Fran
 cois Hammer (GEPI\, Observatoire de Paris)
DTSTART:20110928T121500Z
DTEND:20110928T124500Z
UID:TALK32153@talks.cam.ac.uk
CONTACT:Mark Gieles
DESCRIPTION:Using the deepest and most complete observations of distant ga
 laxies\,\nwe investigate how large disks could have been formed. Observati
 ons\ninclude spatially-resolved kinematics\, detailed morphologies and\nph
 otometry from UV to mid-IR. Six billions years ago\, half of the\npresent-
 day spirals were experiencing major mergers\, evidenced by\ntheir anomalou
 s kinematics and morphologies as well as their\nrelatively high gas fracti
 ons. They are consequently modelled using\nthe state of the art hydrodynam
 ics models. This leads to a new channel\nof disk formation\, e.g. disks re
 formed after gas-rich mergers\, which\ncan be compared to predictions from
  the LCDM model.\nThe scenario can be ultimately compared to properties of
  nearby\ngalaxies\, including the Milky Way\, M31 and galaxies showing\nul
 tra-faint\, gigantic structures in their haloes.
LOCATION:Sackler Lecture Theatre\, IoA
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