The Chandra Planetary Nebula Survey (CHANPLANS). II. X-ray emission from compact planetary nebulae
Author
Montez, R.; Freeman, M.; Montez, R.; Kastner, J. H.; Balick, B.; Frew, D. J.; Jones, D.; Miszalski, B.; Sahai, R.; Blackman, E.; Chu, Y. H.; De Marco, O.; Frank, A.; Guerrero, M. A.; Lopez, J. A.; Zijlstra, Albert A.; Bujarrabal, V.; Corradi, R. L M; Nordhaus, Jason T.; Parker, Q. A.; Sandin, C.; Schönberner, D.; Soker, N.; Sokoloski, J. L.; Steffen, M.; Toalá, J. A.; Ueta, T.; Villaver Sobrino, Eva GloriaEntity
UAM. Departamento de Física TeóricaPublisher
Institute of Physics PublishigDate
2014-10-20Citation
10.1088/0004-637X/794/2/99
The Astrophysical Journal 794.2 (2014): 99
ISSN
0004-637X (print); 1538-4357 (online)DOI
10.1088/0004-637X/794/2/99Funded by
We thank the anonymous referee for helpful comments. This research was supported via award No. GO3–14019A to RIT issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. Jesus A. Toalá and Martín A. Guerrero are supported by the Spanish MICINN grant AYA 2011-29754-C03-02 co-funded with FEDER funds. The Digitized Sky Surveys were produced at STScI under U.S. Government Grant NAG W-2166. This research has also made use of the SIMBAD database, operated at CDS, Strasbourg, FranceProject
Gobierno de España. AYA 2011-29754-C03-02Editor's Version
http://dx.doi.org/10.1088/0004-637X/794/2/99Subjects
Binaries: general; Planetary nebulae: individual (NGC 1501, NGC 3918, NGC 6153, NGC 6369, HbDs 1, NGC 6337, Sp 1); Stars: AGB and post-AGB; FísicaNote
The Astrophysical Journal 794.2 (2014): 99 reproduced by permission of the AASRights
© 2014. The American Astronomical SocietyAbstract
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
Files in this item
Google Scholar:Montez, R.
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Freeman, M.
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Montez, R.
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Kastner, J. H.
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Balick, B.
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Frew, D. J.
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Jones, D.
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Miszalski, B.
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Sahai, R.
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Blackman, E.
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Chu, Y. H.
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De Marco, O.
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Frank, A.
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Guerrero, M. A.
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Lopez, J. A.
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Zijlstra, Albert A.
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Bujarrabal, V.
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Corradi, R. L M
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Nordhaus, Jason T.
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Parker, Q. A.
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Sandin, C.
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Schönberner, D.
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Soker, N.
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Sokoloski, J. L.
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Steffen, M.
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Toalá, J. A.
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Ueta, T.
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Villaver Sobrino, Eva Gloria
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