New Wolf–Rayet central stars of planetary nebulae identified on the AAO/UKST Hα Survey |
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| Authors: | D H Morgan Q A Parker D Russeil |
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| Institution: | Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ;Observatory, University of Helsinki, P O Box 14, FIN-00014 Helsinki, Finland;Observatoire de Marseille, Marseille, France |
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| Abstract: | The central stars of two of the new planetary nebulae found during scans of the AAO/UKST H α Survey of the Milky Way have been found to exhibit Wolf–Rayet (WR) emission features. One (PMR 1) is an early-type star of class either WO4] or WC4]. The other (PMR 2) is a late WC] star which, depending on the classification scheme used, is either intermediate in class between WC9] and WC10] or the sole member of the WC10] class. Both stars exhibit unusual spectral features which may be attributed to enhanced nitrogen in their atmospheres and could be indicative of unusual stellar evolution. |
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| Keywords: | stars: Wolf–Rayet planetary nebulae: general |
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