Early results from ChanPLaNS: Mystery of hard X-ray emitting CSPNe

Rodolfo Montez; J. H. Kastner; B. Balick; E. Behar; E. Blackman; V. Bujarrabal; Y. H. Chu; R. Corradi; O. De Marco; A. Frank; D. Frew; M. Guerrero; S. Kwok; J. A. Lopez; B. Miszalski; J. Nordhaus; Q. Parker; R. Sahai; C. Sandin; D. Schoenberner; N. Soker; J. Sokoloski; W. Steffen; T. Ueta; E. Villaver; A. Zijlstra

doi:10.1017/S1743921312011878

Early results from ChanPLaNS: Mystery of hard X-ray emitting CSPNe

Rodolfo Montez, J. H. Kastner, B. Balick, E. Behar, E. Blackman, V. Bujarrabal, Y. H. Chu, R. Corradi, O. De Marco, A. Frank, D. Frew, M. Guerrero, S. Kwok, J. A. Lopez, B. Miszalski, J. Nordhaus, Q. Parker, R. Sahai, C. Sandin, D. SchoenbernerN. Soker, J. Sokoloski, W. Steffen, T. Ueta, E. Villaver, A. Zijlstra

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We 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.

Original language	English (US)
Title of host publication	Planetary Nebulae
Subtitle of host publication	An Eye to the Future
Editors	Arturo Manchado, Letizia Stanghellini, Detlef Schonberner
Pages	450-451
Number of pages	2
Edition	S283
DOIs	https://doi.org/10.1017/S1743921312011878
State	Published - Jul 2011
Externally published	Yes

Publication series

Name	Proceedings of the International Astronomical Union
Number	S283
Volume	7
ISSN (Print)	1743-9213
ISSN (Electronic)	1743-9221

Keywords

X-rays: stars
planetary nebulae: general
stars: white dwarfs
surveys

ASJC Scopus subject areas

Medicine (miscellaneous)
Astronomy and Astrophysics
Nutrition and Dietetics
Public Health, Environmental and Occupational Health
Space and Planetary Science

Online availability

10.1017/S1743921312011878

Library availability

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Montez, R., Kastner, J. H., Balick, B., Behar, E., Blackman, E., Bujarrabal, V., Chu, Y. H., Corradi, R., De Marco, O., Frank, A., Frew, D., Guerrero, M., Kwok, S., Lopez, J. A., Miszalski, B., Nordhaus, J., Parker, Q., Sahai, R., Sandin, C., ... Zijlstra, A. (2011). Early results from ChanPLaNS: Mystery of hard X-ray emitting CSPNe. In A. Manchado, L. Stanghellini, & D. Schonberner (Eds.), Planetary Nebulae: An Eye to the Future (S283 ed., pp. 450-451). (Proceedings of the International Astronomical Union; Vol. 7, No. S283). https://doi.org/10.1017/S1743921312011878

Early results from ChanPLaNS: Mystery of hard X-ray emitting CSPNe. / Montez, Rodolfo; Kastner, J. H.; Balick, B. et al.
Planetary Nebulae: An Eye to the Future. ed. / Arturo Manchado; Letizia Stanghellini; Detlef Schonberner. S283. ed. 2011. p. 450-451 (Proceedings of the International Astronomical Union; Vol. 7, No. S283).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Montez, R, Kastner, JH, Balick, B, Behar, E, Blackman, E, Bujarrabal, V, Chu, YH, Corradi, R, De Marco, O, Frank, A, Frew, D, Guerrero, M, Kwok, S, Lopez, JA, Miszalski, B, Nordhaus, J, Parker, Q, Sahai, R, Sandin, C, Schoenberner, D, Soker, N, Sokoloski, J, Steffen, W, Ueta, T, Villaver, E & Zijlstra, A 2011, Early results from ChanPLaNS: Mystery of hard X-ray emitting CSPNe. in A Manchado, L Stanghellini & D Schonberner (eds), Planetary Nebulae: An Eye to the Future. S283 edn, Proceedings of the International Astronomical Union, no. S283, vol. 7, pp. 450-451. https://doi.org/10.1017/S1743921312011878

@inproceedings{d2d7ae3323154b0ba286eab5ad172db8,

title = "Early results from ChanPLaNS: Mystery of hard X-ray emitting CSPNe",

abstract = "We 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.",

keywords = "X-rays: stars, planetary nebulae: general, stars: white dwarfs, surveys",

author = "Rodolfo Montez and Kastner, {J. H.} and B. Balick and E. Behar and E. Blackman and V. Bujarrabal and Chu, {Y. H.} and R. Corradi and {De Marco}, O. and A. Frank and D. Frew and M. Guerrero and S. Kwok and Lopez, {J. A.} and B. Miszalski and J. Nordhaus and Q. Parker and R. Sahai and C. Sandin and D. Schoenberner and N. Soker and J. Sokoloski and W. Steffen and T. Ueta and E. Villaver and A. Zijlstra",

note = "Funding Information: † This research was supported via award number GO1-12025A 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 NAS803060.",

year = "2011",

month = jul,

doi = "10.1017/S1743921312011878",

language = "English (US)",

isbn = "9781107019836",

series = "Proceedings of the International Astronomical Union",

number = "S283",

pages = "450--451",

editor = "Arturo Manchado and Letizia Stanghellini and Detlef Schonberner",

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T2 - Mystery of hard X-ray emitting CSPNe

AU - Montez, Rodolfo

AU - Kastner, J. H.

AU - Balick, B.

AU - Behar, E.

AU - Blackman, E.

AU - Bujarrabal, V.

AU - Chu, Y. H.

AU - Corradi, R.

AU - De Marco, O.

AU - Frank, A.

AU - Frew, D.

AU - Guerrero, M.

AU - Kwok, S.

AU - Lopez, J. A.

AU - Miszalski, B.

AU - Nordhaus, J.

AU - Parker, Q.

AU - Sahai, R.

AU - Sandin, C.

AU - Schoenberner, D.

AU - Soker, N.

AU - Sokoloski, J.

AU - Steffen, W.

AU - Ueta, T.

AU - Villaver, E.

AU - Zijlstra, A.

N1 - Funding Information: † This research was supported via award number GO1-12025A 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 NAS803060.

PY - 2011/7

Y1 - 2011/7

N2 - We 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.

AB - We 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.

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ER -

Early results from ChanPLaNS: Mystery of hard X-ray emitting CSPNe

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