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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20170117T123000
DTEND;TZID=Atlantic/Canary:20170117T133000
UID:iactalks-981
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/981
CREATED:2017-01-17T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Red Supergiant Stars as Cosmic Abundance Probes
DESCRIPTION:Red Supergiant Stars as Cosmic Abundance Probes\nDr. Lee Patric
 k\n\nRed supergiant stars (RSGs) are among brightest stars in the Universe
 . Their extreme luminosities and young ages make them excellent candidates
  to probe young stellar populations of external galaxies. The problem is t
 hat their spectra are typically dominated by molecular absorption features
 , which makes a chemical analysis almost impossible.Using state-of-the-art
  stellar model atmospheres I'll discuss how a new analysis method allows u
 s to probe the chemical evolution of external galaxies using RSGs as abund
 ance tracers. I'll detail why near-IR multi-object spectrographs are vital
  to this work, highlight some of our recent results and compare these resu
 lts with other abundance indicators (i.e BSGs, HII regions). Finally, I'll
  outline the potential of this technique on future facilities such as JWST
 -NIRspec and a MOS on the E-ELT.
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