A unique Galactic planetary nebula with a [WN] central star

Details A unique Galactic planetary nebula with a [WN] central star A unique Galactic planetary nebula with a [WN] central star

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003mnras.346..719m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 346, Issue 3, pp. 719-730.

Astronomy and Astrophysics

Astronomy

25

Stars: Individual: Pm5, Stars: Wolf, Rayet, Planetary Nebulae: Individual: Phr 16196-4913

Scientific paper

We report the discovery of the first probable Galactic [WN] central star of a planetary nebula (CSPN). The planetary nebula candidate was found during our systematic scans of the AAO/UKST Hα Survey of the Milky Way. Subsequent confirmatory spectroscopy of the nebula and central star reveals the remarkable nature of this object. The nebular spectrum shows emission lines with large expansion velocities exceeding 150 km s-1, suggesting that perhaps the object is not a conventional planetary nebula. The central star itself is very red and is identified as being of the [WN] class, which makes it unique in the Galaxy. A large body of supplementary observational data supports the hypothesis that this object is indeed a planetary nebula and not a Population I Wolf-Rayet star with a ring nebula.

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