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Conference Paper: The Planetary Nebula Abell 48 and its [WN4] Central Star

TitleThe Planetary Nebula Abell 48 and its [WN4] Central Star
Authors
Issue Date1-Jan-2013
PublisherOxford University Press
AbstractWe have conducted a multi-wavelength study of the planetary nebula Abell 48 and give a revised classification of its nucleus as a hydrogen-deficient star of type [WN4]. The surrounding nebula has a morphology typical of PNe and importantly, is not enriched in nitrogen, and thus not the 'peeled atmosphere' of a massive star. Indeed, no WN4 star is known to be surrounded by such a compact nebula. The ionized mass of the nebula is also a powerful discriminant between the low-mass PN and high-mass WR ejecta interpretations. The ionized mass would be impossibly high if a distance corresponding to a Pop I star was adopted, but at a distance of 2 kpc, the mass is quite typical of moderately evolved PNe. At this distance, the ionizing star then has a luminosity of similar to 5000 L-circle dot, again rather typical for a PN central star. We give a brief discussion of the implications of this discovery for the late-stage evolution of intermediate-mass stars.
Persistent Identifierhttp://hdl.handle.net/10722/341944
ISBN
ISSN
2023 Impact Factor: 4.7
2023 SCImago Journal Rankings: 1.621
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorBojicic, IS-
dc.contributor.authorFrew, DJ-
dc.contributor.authorParker, QA-
dc.contributor.authorStupar, M-
dc.contributor.authorWachter, S-
dc.contributor.authorDePew, K-
dc.date.accessioned2024-03-26T05:38:25Z-
dc.date.available2024-03-26T05:38:25Z-
dc.date.issued2013-01-01-
dc.identifier.isbn978-1-58381-820-6-
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/10722/341944-
dc.description.abstractWe have conducted a multi-wavelength study of the planetary nebula Abell 48 and give a revised classification of its nucleus as a hydrogen-deficient star of type [WN4]. The surrounding nebula has a morphology typical of PNe and importantly, is not enriched in nitrogen, and thus not the 'peeled atmosphere' of a massive star. Indeed, no WN4 star is known to be surrounded by such a compact nebula. The ionized mass of the nebula is also a powerful discriminant between the low-mass PN and high-mass WR ejecta interpretations. The ionized mass would be impossibly high if a distance corresponding to a Pop I star was adopted, but at a distance of 2 kpc, the mass is quite typical of moderately evolved PNe. At this distance, the ionizing star then has a luminosity of similar to 5000 L-circle dot, again rather typical for a PN central star. We give a brief discussion of the implications of this discovery for the late-stage evolution of intermediate-mass stars.-
dc.languageeng-
dc.publisherOxford University Press-
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society-
dc.titleThe Planetary Nebula Abell 48 and its [WN4] Central Star-
dc.typeConference_Paper-
dc.identifier.volume469-
dc.identifier.spage309-
dc.identifier.eissn1365-2966-
dc.identifier.isiWOS:000323459300060-
dc.publisher.placeSAN FRANCISCO-
dc.identifier.issnl0035-8711-

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