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Article: The Chandra Planetary Nebula Survey (CHANPLANS). II. X-ray emission from compact planetary nebulae

TitleThe Chandra Planetary Nebula Survey (CHANPLANS). II. X-ray emission from compact planetary nebulae
Authors
Keywordsstars: AGB and post-AGB
binaries: general
planetary nebulae: individual (NGC 1501, NGC 3918, NGC 6153, NGC 6369, HbDs 1, NGC 6337, Sp 1)
Issue Date2014
Citation
Astrophysical Journal, 2014, v. 794, n. 2 How to Cite?
Abstract© 2014. The American Astronomical Society. All rights reserved.. We present results from the most recent set of observations obtained as part of the Chandra X-ray observatory Planetary Nebula Survey (CHANPLANS), the first comprehensive X-ray survey of planetary nebulae (PNe) in the solar neighborhood (i.e., within 1.5 kpc of the Sun). The survey is designed to place constraints on the frequency of appearance and range of X-ray spectral characteristics of X-ray-emitting PN central stars and the evolutionary timescales of wind-shock-heated bubbles within PNe. CHANPLANS began with a combined Cycle 12 and archive Chandra survey of 35 PNe. CHANPLANS continued via a Chandra Cycle 14 Large Program which targeted all (24) remaining known compact (R neb ≲ 0.4 pc), young PNe that lie within 1.5 kpc. Results from these Cycle 14 observations include first-time X-ray detections of hot bubbles within NGC 1501, 3918, 6153, and 6369, and point sources in HbDs 1, NGC 6337, and Sp 1. The addition of the Cycle 14 results brings the overall CHANPLANS diffuse X-ray detection rate to 27% and the point source detection rate to 36%. It has become clearer that diffuse X-ray emission is associated with young (≲ 5 × 103 yr), and likewise compact (R neb ≲ 0.15 pc), PNe with closed structures and high central electron densities (ne ≳ 1000 cm-3), and is rarely associated with PNe that show H2 emission and/or pronounced butterfly structures. Hb 5 is one such exception of a PN with a butterfly structure that hosts diffuse X-ray emission. Additionally, two of the five new diffuse X-ray detections (NGC 1501 and NGC 6369) host [WR]-type central stars, supporting the hypothesis that PNe with central stars of [WR]-type are likely to display diffuse X-ray emission.
Persistent Identifierhttp://hdl.handle.net/10722/209039
ISSN
2015 Impact Factor: 5.909
2015 SCImago Journal Rankings: 3.266

 

DC FieldValueLanguage
dc.contributor.authorMontez, Rodolfo-
dc.contributor.authorFreeman, M.-
dc.contributor.authorMontez, R.-
dc.contributor.authorKastner, Joel H.-
dc.contributor.authorBalick, Bruce-
dc.contributor.authorFrew, David J.-
dc.contributor.authorJones, David I.-
dc.contributor.authorMiszalski, Brent-
dc.contributor.authorSahai, Raghvendra-
dc.contributor.authorBlackman, Eric G.-
dc.contributor.authorChu, Youhua-
dc.contributor.authorDe Marco, Orsola-
dc.contributor.authorFrank, Adam A.-
dc.contributor.authorGuerrero, Martín Antonio-
dc.contributor.authorĹopez, José Alberto-
dc.contributor.authorZijlstra, Albert A.-
dc.contributor.authorBujarrabal, Valentín-
dc.contributor.authorCorradi, Romano L M-
dc.contributor.authorNordhaus, Jason T.-
dc.contributor.authorParker, Quentin A.-
dc.contributor.authorSandin, Christer-
dc.contributor.authorSchönberner, Detlef-
dc.contributor.authorSoker, Noam-
dc.contributor.authorSokoloski, Jennifer L.-
dc.contributor.authorSteffen, Matthias-
dc.contributor.authorToalá, Jesús A.-
dc.contributor.authorUeta, Toshiya-
dc.contributor.authorVillaver, Eva V A-
dc.date.accessioned2015-03-23T02:31:16Z-
dc.date.available2015-03-23T02:31:16Z-
dc.date.issued2014-
dc.identifier.citationAstrophysical Journal, 2014, v. 794, n. 2-
dc.identifier.issn0004-637X-
dc.identifier.urihttp://hdl.handle.net/10722/209039-
dc.description.abstract© 2014. The American Astronomical Society. All rights reserved.. We present results from the most recent set of observations obtained as part of the Chandra X-ray observatory Planetary Nebula Survey (CHANPLANS), the first comprehensive X-ray survey of planetary nebulae (PNe) in the solar neighborhood (i.e., within 1.5 kpc of the Sun). The survey is designed to place constraints on the frequency of appearance and range of X-ray spectral characteristics of X-ray-emitting PN central stars and the evolutionary timescales of wind-shock-heated bubbles within PNe. CHANPLANS began with a combined Cycle 12 and archive Chandra survey of 35 PNe. CHANPLANS continued via a Chandra Cycle 14 Large Program which targeted all (24) remaining known compact (R neb ≲ 0.4 pc), young PNe that lie within 1.5 kpc. Results from these Cycle 14 observations include first-time X-ray detections of hot bubbles within NGC 1501, 3918, 6153, and 6369, and point sources in HbDs 1, NGC 6337, and Sp 1. The addition of the Cycle 14 results brings the overall CHANPLANS diffuse X-ray detection rate to 27% and the point source detection rate to 36%. It has become clearer that diffuse X-ray emission is associated with young (≲ 5 × 103 yr), and likewise compact (R neb ≲ 0.15 pc), PNe with closed structures and high central electron densities (ne ≳ 1000 cm-3), and is rarely associated with PNe that show H2 emission and/or pronounced butterfly structures. Hb 5 is one such exception of a PN with a butterfly structure that hosts diffuse X-ray emission. Additionally, two of the five new diffuse X-ray detections (NGC 1501 and NGC 6369) host [WR]-type central stars, supporting the hypothesis that PNe with central stars of [WR]-type are likely to display diffuse X-ray emission.-
dc.languageeng-
dc.relation.ispartofAstrophysical Journal-
dc.subjectstars: AGB and post-AGB-
dc.subjectbinaries: general-
dc.subjectplanetary nebulae: individual (NGC 1501, NGC 3918, NGC 6153, NGC 6369, HbDs 1, NGC 6337, Sp 1)-
dc.titleThe Chandra Planetary Nebula Survey (CHANPLANS). II. X-ray emission from compact planetary nebulae-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1088/0004-637X/794/2/99-
dc.identifier.scopuseid_2-s2.0-84907705547-
dc.identifier.volume794-
dc.identifier.issue2-
dc.identifier.eissn1538-4357-

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