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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20110524T000000
DTEND;TZID=Atlantic/Canary:20110524T010000
UID:iactalks-283
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/283
CREATED:2011-05-24T00:00:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Evidence of a Distinct Stellar Population in the Counterrotating Co
 re of NGC 1700
DESCRIPTION:Evidence of a Distinct Stellar Population in the Counterrotatin
 g Core of NGC 1700\nDr. Alexandre Vazdekis\n\nWe find a distinct stellar p
 opulation in the counterrotating and kinematically decoupled core of the i
 solated massive elliptical galaxy NGC 1700. Coinciding with the edge of th
 is core, we find a significant change in the slope of the gradient of vari
 ous representative absorption line indices. Our age estimate for this core
  is markedly younger than the main body of the galaxy. We find lower value
 s for the age, metallicity, and Mg/Fe abundance ratio in the center of thi
 s galaxy when we compare them with other isolated elliptical galaxies with
  similar velocity dispersion. We discuss the different possible scenarios 
 that might have lead to the formation of this younger kinematically decoup
 led structure and conclude that, in light of our findings, the ingestion o
 f a small stellar companion on a retrograde orbit is the most favored.
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