New Spectroscopic Data and Classification of Southern [WC] Stars

Details New Spectroscopic Data and Classification of Southern [WC] Stars New Spectroscopic Data and Classification of Southern [WC] Stars

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aj....124..464d&link_type=abstract

The Astronomical Journal, Volume 124, Issue 1, pp. 464-469.

Astronomy and Astrophysics

Astronomy

4

Ism: Planetary Nebulae: General, Stars: Agb And Post-Agb, Stars: Fundamental Parameters, Stars: Wolf-Rayet

Scientific paper

New spectroscopic data of a sample of 10 southern [WC] stars are presented and described. Equivalent widths of carbon line transitions (C II λ4267, C III λ5696, and C IV λλ5801, 5812) are used to revise the classification of the seven late-type [WCL] stars of the sample. For them, our spectra allowed us to employ a quantitative system. We have confirmed the previous classification for three of the objects, but for three others, we have encountered different subtypes. Because of the weakness of the oxygen lines, it was not possible to suggest subtypes for the three [WCE] stars. Based on observations made with the 1.52 m telescope at the European Southern Observatory (La Silla, Chile) under agreement with the Observatório Nacional, Brazil.

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