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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20120705T103000
DTEND;TZID=Atlantic/Canary:20120705T113000
UID:iactalks-401
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/401
CREATED:2012-07-05T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The dark and bright sides of massive early-type galaxies
DESCRIPTION:The dark and bright sides of massive early-type galaxies\nDr. I
 gnacio Ferreras\n\nMassive early-type galaxies constitute an ideal test be
 d to probe our  understanding of galaxy formation and evolution. Their hig
 h mass,  spheroidal morphology and overly old stellar populations, along w
 ith  their presence over a wide range of redshifts put to the test our  cu
 rrent paradigm of formation via hierarchical growth. In this talk I  will 
 review recent work focused on the dark and bright sides of this  problem. 
 The former is tackled via gravitational lensing, comparing the  dark matte
 r and luminous components out to several effective radii,  probing the eff
 iciency of baryon collapse and ejection, and its feedback  on the dark mat
 ter distribution (adiabatic compression). The bright  side of early-type g
 alaxies is approached via photo-spectroscopic  analyses of the stellar pop
 ulations, revealing a complex formation and  assembly history with two wel
 l-defined phases of growth, and an  intriguing connection with the "microp
 hysics" of star formation.
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