The Origin and Evolution of the Extremely Metal-Poor Halo Planetary Nebulae

Details The Origin and Evolution of the Extremely Metal-Poor Halo Planetary Nebulae The Origin and Evolution of the Extremely Metal-Poor Halo Planetary Nebulae

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1016..427o&link_type=abstract

ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: The 10th International Symposium on Origin of Matter and Evolution of Galaxies: From

Computer Science

2

Acoustic Cavitation In Liquids, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Star Formation

Scientific paper

We present recent results of our research on the extremely metal-poor ([Fe/H]~-2) halo planetary nebulae (PNe), K 648, BoBn 1, and H 4-1. Chemical abundance analysis using Subaru/HDS spectra and archive data shows that these halo PNe might have evolved from carbon-enhanced metal-poor (CEMP) stars. In BoBn 1, we have detected two fluorine lines and found enhanced fluorine abundance, [F/H] = +1.1. The [C,N,F/Fe] abundances of BoBn 1 are comparable to those of the CEMP-s star, HE1305+0132 ([Fe/H] = -2.5). BoBn 1 might have evolved from a CEMP-s star such as HE1305+0132 in the origin and evolution.

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