Chemical evolution of SMC planetary nebulae (Idiart+, 2007)

Details Chemical evolution of SMC planetary nebulae (Idiart+, 2007) Chemical evolution of SMC planetary nebulae (Idiart+, 2007)

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ycat..34720101i&link_type=abstract

VizieR On-line Data Catalog: J/A+A/472/101. Originally published in: 2007A&A...472..101I

Physics

Magellanic Clouds, Planetary Nebulae, Spectroscopy

Scientific paper

We investigate the chemical evolution of the Small Magellanic Cloud (SMC) based on abundance data of planetary nebulae (PNe). The main goal is to investigate the time evolution of the oxygen abundance in this galaxy by deriving an age-metallicity relation. Such a relation is of fundamental importance as an observational constraint for chemical evolution models of the SMC. We have used high quality PNe data to derive the properties of the progenitor stars, so that the stellar ages could be estimated. We collected a large number of measured spectral fluxes for each nebula and derived accurate physical parameters and nebular abundances. New spectral data for a sample of SMC PNe obtained between 1999 and 2002 are also presented. These data are used with data available in the literature to improve the accuracy of the fluxes for each spectral line.
(4 data files).

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