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The dual dust chemistries of planetary nebulae with [WCL] central stars

Cohen, M; Barlow, MJ; Liu, XW; Jones, AF; (2002) The dual dust chemistries of planetary nebulae with [WCL] central stars. Monthly Notices of the Royal Astronomical Society , 332 (4) pp. 879-890. 10.1046/j.1365-8711.2002.05350.x. Green open access

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Abstract

The rather rare class of central stars of planetary nebulae that show very low-excitation Wolf–Rayet spectra has been a subject of great interest, particularly in the infrared, since its discovery in the late 1960s. Further peculiarities have been found with the advent of infrared spectroscopy from ISO. Notably, these objects simultaneously betray the presence of regions of carbon-rich and oxygen-rich dust chemistry. We compare and contrast complete ISO spectra between 2 and 200 μm of a sample of six [WC8] to [WC11] central stars, finding many similarities. Among this sample, one star provides strong evidence of quasi-periodic light variations, suggestive of a dust cloud orbiting in a plane from which we view the system.

Type: Article
Title: The dual dust chemistries of planetary nebulae with [WCL] central stars
Open access status: An open access version is available from UCL Discovery
DOI: 10.1046/j.1365-8711.2002.05350.x
Publisher version: https://doi.org/10.1046/j.1365-8711.2002.05350.x
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: astrochemistry, stars: chemically peculiar, circumstellar matter, stars: evolution, stars: Wolf–Rayet, planetary nebulae: general
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10096019
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