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oaioai:hub.hku.hk:10722/175046

Abundances of s-process elements in planetary nebulae: Br, Kr & Xe

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Publication date
1 January 2006
Publisher
United Kingdom
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    Abstract

    We identify emission lines of post-iron peak elements in very high signal-to-noise spectra of a sample of planetary nebulae. Analysis of lines from ions of Kr and Xe reveals enhancements in most of the PNe, in agreement with theories of s-process in AGB stars. Surprisingly, we did not detect lines from Br even though s-process calculations indicate that it should be produced with Kr at detectable levels. © 2006 International Astronomical Union.link_to_subscribed_fulltex

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    Last time updated on 01/06/2016

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