File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Conference Paper: Early results from ChanPLaNS: mystery of hard X-ray emitting CSPNe

TitleEarly results from ChanPLaNS: mystery of hard X-ray emitting CSPNe
Authors
KeywordsSurveys
X-rays: stars
Planetary nebulae: general
Stars: white dwarfs
Issue Date2012
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU
Citation
The IAU Symposium 283: Planetary Nebulae: an Eye to the Future, Puerto de la Cruz, Tenerife, Spain, 25-29 July 2011. In International Astronomical Union Proceedings, 2011, v. 7 S283, p. 450-451 How to Cite?
AbstractWe are presently using the Chandra X-ray Observatory to conduct the first systematic X-ray survey of planetary nebulae (PNe) in the solar neighborhood. The Chandra Planetary Nebula Survey (ChanPlaNS) is a 570 ks Chandra Cycle 12 Large Program targeting 21 high-excitation PNe within ∼1.5 kpc of Earth. When complete, this survey will provide a suite of new X-ray diagnostics that will inform the study of late stellar evolution, binary star astrophysics, and wind interactions. Among the early results of ChanPlaNS (when combined with archival Chandra data) is a surprisingly high detection rate of relatively hard X-ray emission from CSPNe. Specifically, X-ray point sources are clearly detected in roughly half of the ∼30 high-excitation PNe observed thus far by Chandra, and all but one of these X-ray-emitting CSPNe display evidence for a hard (few MK) component in their Chandra spectra. Only the central star of the Dumbbell appears to display 'pure' hot blackbody emission from a ∼200 kK hot white dwarf photosphere in the X-ray band. Potential explanations for the'excess' hard X-ray emission detected from the other CSPNe include late-type companions (heretofore undetected, in most cases) whose coronae have been rejuvenated by recent interactions with the mass-losing WD progenitor, non-LTE effects in hot white dwarf photospheres, self-shocking variable winds from the central star, and slow (re-)accretion of previously ejected red giant envelope mass. © 2012 International Astronomical Union.
Persistent Identifierhttp://hdl.handle.net/10722/166761
ISBN
ISSN
2015 SCImago Journal Rankings: 0.105
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMontez Jr, Ren_US
dc.contributor.authorKastner, JHen_US
dc.contributor.authorBalick, Ben_US
dc.contributor.authorBehar, Een_US
dc.contributor.authorBlackman, Een_US
dc.contributor.authorBujarrabal, Ven_US
dc.contributor.authorChu, YHen_US
dc.contributor.authorCorradi, Ren_US
dc.contributor.authorDe Marco, Oen_US
dc.contributor.authorFrank, Aen_US
dc.contributor.authorFrew, Den_US
dc.contributor.authorGuerrero, Men_US
dc.contributor.authorKwok, Sen_US
dc.contributor.authorLopez, JAen_US
dc.contributor.authorMiszalski, Ben_US
dc.contributor.authorNordhaus, Jen_US
dc.contributor.authorParker, Qen_US
dc.contributor.authorSahai, Ren_US
dc.contributor.authorSandin, Cen_US
dc.contributor.authorSchoenberner, Den_US
dc.contributor.authorSoker, Nen_US
dc.contributor.authorSokoloski, Jen_US
dc.contributor.authorSteffen, Wen_US
dc.contributor.authorUeta, Ten_US
dc.contributor.authorVillaver, Een_US
dc.contributor.authorZijlstra, Aen_US
dc.date.accessioned2012-09-20T08:46:21Z-
dc.date.available2012-09-20T08:46:21Z-
dc.date.issued2012en_US
dc.identifier.citationThe IAU Symposium 283: Planetary Nebulae: an Eye to the Future, Puerto de la Cruz, Tenerife, Spain, 25-29 July 2011. In International Astronomical Union Proceedings, 2011, v. 7 S283, p. 450-451en_US
dc.identifier.isbn978-110701983-6-
dc.identifier.issn1743-9213-
dc.identifier.urihttp://hdl.handle.net/10722/166761-
dc.description.abstractWe are presently using the Chandra X-ray Observatory to conduct the first systematic X-ray survey of planetary nebulae (PNe) in the solar neighborhood. The Chandra Planetary Nebula Survey (ChanPlaNS) is a 570 ks Chandra Cycle 12 Large Program targeting 21 high-excitation PNe within ∼1.5 kpc of Earth. When complete, this survey will provide a suite of new X-ray diagnostics that will inform the study of late stellar evolution, binary star astrophysics, and wind interactions. Among the early results of ChanPlaNS (when combined with archival Chandra data) is a surprisingly high detection rate of relatively hard X-ray emission from CSPNe. Specifically, X-ray point sources are clearly detected in roughly half of the ∼30 high-excitation PNe observed thus far by Chandra, and all but one of these X-ray-emitting CSPNe display evidence for a hard (few MK) component in their Chandra spectra. Only the central star of the Dumbbell appears to display 'pure' hot blackbody emission from a ∼200 kK hot white dwarf photosphere in the X-ray band. Potential explanations for the'excess' hard X-ray emission detected from the other CSPNe include late-type companions (heretofore undetected, in most cases) whose coronae have been rejuvenated by recent interactions with the mass-losing WD progenitor, non-LTE effects in hot white dwarf photospheres, self-shocking variable winds from the central star, and slow (re-)accretion of previously ejected red giant envelope mass. © 2012 International Astronomical Union.-
dc.languageengen_US
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU-
dc.relation.ispartofInternational Astronomical Union Proceedingsen_US
dc.rightsInternational Astronomical Union Proceedings. Copyright © Cambridge University Press.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectSurveys-
dc.subjectX-rays: stars-
dc.subjectPlanetary nebulae: general-
dc.subjectStars: white dwarfs-
dc.titleEarly results from ChanPLaNS: mystery of hard X-ray emitting CSPNeen_US
dc.typeConference_Paperen_US
dc.identifier.emailKwok, S: deannote@hku.hken_US
dc.identifier.authorityKwok, S=rp00716en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1017/S1743921312011878-
dc.identifier.scopuseid_2-s2.0-84865721093-
dc.identifier.hkuros210480en_US
dc.identifier.volume7-
dc.identifier.issueS283-
dc.identifier.spage450en_US
dc.identifier.epage451en_US
dc.identifier.isiWOS:000309944800128-
dc.publisher.placeUnited Kingdom-
dc.customcontrol.immutablesml 140523-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats