Stellar C III Emissions as a New Classification Parameter for [WC] Central Stars

Details Stellar C III Emissions as a New Classification Parameter for [WC] Central Stars Stellar C III Emissions as a New Classification Parameter for [WC] Central Stars

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...519..726f&link_type=abstract

The Astrophysical Journal, Volume 519, Issue 2, pp. 726-732.

Astronomy and Astrophysics

Astronomy

2

Ism: Planetary Nebulae: General, Stars: Fundamental Parameters, Stars: Wolf-Rayet, Ultraviolet: Stars

Scientific paper

We report detection of stellar C III lambda1909 emission in IUE echelle spectra of early-type [WC] central stars of planetary nebulae (CSPNs). Additionally, stellar C III emission at 2297 Å is observed in early- and late-type [WC] CSPNs. Inclusion of these C III features for abundance determinations may resolve a conflict of underabundance of C/O for early-type [WC2]-[WC4] CSPNs. A linear dependence on stellar C III lambda2297 equivalent widths can be used to indicate a new classification of type-[WCUV] central stars.

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