(F)UV Spectroscopy of K648: Abundance Determination of Trace Elements

Details (F)UV Spectroscopy of K648: Abundance Determination of Trace Elements (F)UV Spectroscopy of K648: Abundance Determination of Trace Elements

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1273..239m&link_type=abstract

17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 239-242 (2010).

Physics

Planetary Nebulae, Spectral Analysis, Globular Star Clusters, Stellar Evolution, Planetary Nebulae, Luminosities, Magnitudes, Effective Temperatures, Colors, And Spectral Classification, Globular Clusters In The Milky Way, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages

Scientific paper

We present preliminary results of an ongoing spectral analysis of K 648, the central star of the planetary nebula Ps 1, based on high resolution FUV spectra. K 648, in M 15 is one of only four known PNe in globular clusters. The formation of this post-AGB object in a globular cluster is still unclear. Our aim is to determine Teff, log g, and the abundances of trace elements, in order to improve our understanding of post-AGB evolution of extremely metal-poor stars, especially PN formation in globular clusters. We analyzed FUSE, HST/STIS, and HST/FOS observations. A grid of stellar model atmospheres was calculated using the Tübingen NLTE Model Atmosphere Package (TMAP).

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