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Newly Discovered Wolf-Rayet and Weak Emission-Line Central Stars of Planetary Nebulae

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arxiv 1101.2468 v1 pith:WKNFFLRF submitted 2011-01-13 astro-ph.SR

Kyle DePew , Quentin A. Parker , Brent Miszalski , Orsola De Marco , David J. Frew , Agnes Acker , Anna V. Kovacevic , Rob G. Sharp This is my paper · ORCID
classification astro-ph.SR
keywords starswelsbeencandidatecentralconfirmedcspnediscovered
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We present spectra of 32 previously unpublished confirmed and candidate Wolf-Rayet ([WR]) and weak emission-line (WELS) central stars of planetary nebulae (CSPNe). Eighteen stars have been discovered in the Macquarie/AAO/Strasbourg H-Alpha (MASH) PN survey sample, and we have also uncovered 14 confirmed and candidate [WR]s and WELS among the CSPNe of previously known PNe. Spectral classifications have been undertaken using both the Acker & Neiner and Crowther, De Marco & Barlow schemes. Twenty-two members in this sample are identified as probable [WR]s; the remaining 10 appear to be WELS. Observations undertaken as part of the MASH spectroscopic survey have now increased the number of known [WR]s by ~30 per cent. This will permit a better analysis of [WR] subclass distribution, metallicity effects, and evolutionary sequences in these uncommon objects.

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  1. A primer on the formation and evolution of hydrogen deficient Central Stars of Planetary Nebul{\ae} and Related Objects

    astro-ph.SR 2024-11 unverdicted

    A review of the formation and evolution of hydrogen-deficient central stars of planetary nebulae, comparing late thermal pulse (born again) and binary merger channels.

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