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Article: ROSAT X-ray observations of four planetary nebulae

TitleROSAT X-ray observations of four planetary nebulae
Authors
KeywordsPlanetary Nebulae: Individual (Ngc 1535, A36, Ngc 7293, Ngc 3587)
X-Rays: Ism
Issue Date1996
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0004-637X
Citation
The Astrophysical Journal, 1996, v. 466 n. 1 pt. 1, p. 352-358 How to Cite?
AbstractWe report ROSAT Position Sensitive Proportional Counter (PSPC) observations of four planetary nebulae. The observations show that all four nebulae have two-component spectra. A two-component model consisting of a blackbody and a Raymond-Smith thermal plasma is fitted to the observed ROSAT PSPC spectra of NGC 1535, Abell 36, and NGC 7293. For all three cases, the temperatures of the blackbody component are apparently higher than those of the stellar photospheres, indicating nonblackbody atmospheres. In all cases, the temperatures of the high-energy component can be attributed to a hot plasma associated with the possible stellar coronae or the "hot bubbles" predicted by the interacting winds model. The spectral energy distribution of NGC 1535 is constructed and modeled by incorporating our X-ray spectrum into existing data in UV, optical, near-infrared, and far-infrared wavelengths. © 1996. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/179684
ISSN
2015 Impact Factor: 5.909
2015 SCImago Journal Rankings: 3.266
References

 

DC FieldValueLanguage
dc.contributor.authorLeahy, DAen_US
dc.contributor.authorZhang, CYen_US
dc.contributor.authorVolk, Ken_US
dc.contributor.authorKwok, Sen_US
dc.date.accessioned2012-12-19T10:02:49Z-
dc.date.available2012-12-19T10:02:49Z-
dc.date.issued1996en_US
dc.identifier.citationThe Astrophysical Journal, 1996, v. 466 n. 1 pt. 1, p. 352-358en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/179684-
dc.description.abstractWe report ROSAT Position Sensitive Proportional Counter (PSPC) observations of four planetary nebulae. The observations show that all four nebulae have two-component spectra. A two-component model consisting of a blackbody and a Raymond-Smith thermal plasma is fitted to the observed ROSAT PSPC spectra of NGC 1535, Abell 36, and NGC 7293. For all three cases, the temperatures of the blackbody component are apparently higher than those of the stellar photospheres, indicating nonblackbody atmospheres. In all cases, the temperatures of the high-energy component can be attributed to a hot plasma associated with the possible stellar coronae or the "hot bubbles" predicted by the interacting winds model. The spectral energy distribution of NGC 1535 is constructed and modeled by incorporating our X-ray spectrum into existing data in UV, optical, near-infrared, and far-infrared wavelengths. © 1996. The American Astronomical Society. All rights reserved.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0004-637Xen_US
dc.relation.ispartofThe Astrophysical Journalen_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPlanetary Nebulae: Individual (Ngc 1535, A36, Ngc 7293, Ngc 3587)en_US
dc.subjectX-Rays: Ismen_US
dc.titleROSAT X-ray observations of four planetary nebulaeen_US
dc.typeArticleen_US
dc.identifier.emailKwok, S: deannote@hku.hken_US
dc.identifier.authorityKwok, S=rp00716en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1086/177514-
dc.identifier.scopuseid_2-s2.0-21344471048en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-21344471048&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume466en_US
dc.identifier.issue1 pt. 1en_US
dc.identifier.spage352en_US
dc.identifier.epage358en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLeahy, DA=7004941920en_US
dc.identifier.scopusauthoridZhang, CY=38260889100en_US
dc.identifier.scopusauthoridVolk, K=7006571965en_US
dc.identifier.scopusauthoridKwok, S=22980498300en_US

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