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

D. H. Morgan*, Q. A. Parker, Martin Cohen

*Corresponding author for this work

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)719-730
Number of pages12
JournalMonthly Notices of the Royal Astronomical Society
Volume346
Issue number3
DOIs
Publication statusPublished - 11 Dec 2003

Keywords

  • Planetary nebulae: individual: PHR 16196-4913
  • Stars: individual: PM5
  • Stars: Wolf-Rayet

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