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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20130528T123000
DTEND;TZID=Atlantic/Canary:20130528T133000
UID:iactalks-497
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/497
CREATED:2013-05-28T12:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Using nitrogen as a tracer of the chemical content of the Universe:
  from WR nebulae to early star-forming galaxies 
DESCRIPTION:Using nitrogen as a tracer of the chemical content of the Unive
 rse: from WR nebulae to early star-forming galaxies \nDr. Enrique Pérez M
 ontero\n\n Chemical abundances derived using emission-line spectra in
  ionized gaseous nebulae are between the most useful properties that can b
 e derived to understand the evolution of galaxies from the local Universe 
 up to very high redshifts. Since nitrogen is one of the most abundant meta
 ls in the gas-phase of galaxies and its emission-lines can be measured man
 y times instead of those emitted by oxygen, it is important to be aware of
  the implications of the variations in the nitrogen-to-oxygen ratio for th
 e derivation of total metallicity and what are the advantages of using thi
 s abundance ratio to derive other evolutionary properties in different emi
 ssion-line objects. We will also see the utility of some observational tec
 hniques, such integral field spectroscopy, to disentangle between differen
 t processes implied in the excess of observed nitrogen as derived from int
 egrated observations.
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