Open AccessMore Wolf–Rayet central stars of planetary nebulae identified on the AAO/UKST Hα survey
Author(s) -
Parker Q. A.,
Morgan D. H.
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06471.x
Subject(s) - physics , wolf–rayet star , stars , planetary nebula , astrophysics , astronomy , milky way , nebula , stellar classification , o type star , observatory , telescope , reflection nebula
The central stars of another four of the new planetary nebulae found during scans of the Anglo‐Australian Observatory/UK Schmidt Telescope Hα survey of the Milky Way have been found to exhibit Wolf–Rayet emission features. One (PM4) is a [WC8] star; the other three are early‐type stars of class either [WC4] or [WO4]. One of the [WC4] stars (PM3) exhibits unusual spectral features such as those found for PMR1 by Morgan, Parker & Russeil, which may be attributed to enhanced nitrogen in its atmosphere and could be indicative of unusual stellar evolution. The nebula around PM 3 has a bright, dense, high‐excitation core. Supplementary photometric data are consistent with the objects being planetary nebulae.