A barium-rich binary central star in Abell 70

Henri M J Boffin; Brent Miszalski; David J. Frew; Agnes Acker; Joachim Köppen; Anthony F J Moffat; Quentin A. Parker

doi:10.1017/S1743921312011192

A barium-rich binary central star in Abell 70

Henri M J Boffin^*, Brent Miszalski, David J. Frew, Agnes Acker, Joachim Köppen, Anthony F J Moffat, Quentin A. Parker

^*Corresponding author for this work

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

Abstract

We have found the central star of Abell 70 (PN G038.1-25.4, hereafter A 70) to be a binary consisting of a G8 IV-V secondary and a hot white dwarf. The secondary shows enhanced Ba II and Sr II features, firmly classifying it as a barium star. The nebula is found to have Type-I chemical abundances with helium and nitrogen enrichment, which combined with future abundance studies of the central star, will establish A 70 as a unique laboratory for studying s-process AGB nucleosynthesis.

Original language	English
Title of host publication	Planetary Nebulae: An Eye to the Future
Editors	Arturo Manchado, Letizia Stanghellini, Detlef Schönberner
Place of Publication	Cambridge, UK
Pages	314-315
Number of pages	2
Volume	7
Edition	S283
DOIs	https://doi.org/10.1017/S1743921312011192
Publication status	Published - Jul 2011

Publication series

Name	Proceedings of the International Astronomical Union
Number	S283
Volume	7
ISSN (Print)	17439213
ISSN (Electronic)	17439221

Keywords

binaries: general
binaries: symbiotic
planetary nebulae: general
planetary nebulae: individual (PN G038.1-25.4)
stars: AGB and post-AGB
stars: chemically peculiar

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10.1017/S1743921312011192

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Boffin, H. M. J., Miszalski, B., Frew, D. J., Acker, A., Köppen, J., Moffat, A. F. J., & Parker, Q. A. (2011). A barium-rich binary central star in Abell 70. In A. Manchado, L. Stanghellini, & D. Schönberner (Eds.), Planetary Nebulae: An Eye to the Future (S283 ed., Vol. 7, pp. 314-315). (Proceedings of the International Astronomical Union; Vol. 7, No. S283).. https://doi.org/10.1017/S1743921312011192

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title = "A barium-rich binary central star in Abell 70",

abstract = "We have found the central star of Abell 70 (PN G038.1-25.4, hereafter A 70) to be a binary consisting of a G8 IV-V secondary and a hot white dwarf. The secondary shows enhanced Ba II and Sr II features, firmly classifying it as a barium star. The nebula is found to have Type-I chemical abundances with helium and nitrogen enrichment, which combined with future abundance studies of the central star, will establish A 70 as a unique laboratory for studying s-process AGB nucleosynthesis.",

keywords = "binaries: general, binaries: symbiotic, planetary nebulae: general, planetary nebulae: individual (PN G038.1-25.4), stars: AGB and post-AGB, stars: chemically peculiar",

author = "Boffin, {Henri M J} and Brent Miszalski and Frew, {David J.} and Agnes Acker and Joachim K{\"o}ppen and Moffat, {Anthony F J} and Parker, {Quentin A.}",

year = "2011",

month = jul,

doi = "10.1017/S1743921312011192",

language = "English",

isbn = "9781107019836",

volume = "7",

series = "Proceedings of the International Astronomical Union",

number = "S283",

pages = "314--315",

editor = "Arturo Manchado and Letizia Stanghellini and Detlef Sch{\"o}nberner",

booktitle = "Planetary Nebulae: An Eye to the Future",

edition = "S283",

}

Boffin, HMJ, Miszalski, B, Frew, DJ, Acker, A, Köppen, J, Moffat, AFJ & Parker, QA 2011, A barium-rich binary central star in Abell 70. in A Manchado, L Stanghellini & D Schönberner (eds), Planetary Nebulae: An Eye to the Future. S283 edn, vol. 7, Proceedings of the International Astronomical Union, no. S283, vol. 7, Cambridge, UK, pp. 314-315. https://doi.org/10.1017/S1743921312011192

A barium-rich binary central star in Abell 70. / Boffin, Henri M J; Miszalski, Brent; Frew, David J. et al.
Planetary Nebulae: An Eye to the Future. ed. / Arturo Manchado; Letizia Stanghellini; Detlef Schönberner. Vol. 7 S283. ed. Cambridge, UK, 2011. p. 314-315 (Proceedings of the International Astronomical Union; Vol. 7, No. S283).

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

TY - GEN

T1 - A barium-rich binary central star in Abell 70

AU - Boffin, Henri M J

AU - Miszalski, Brent

AU - Frew, David J.

AU - Acker, Agnes

AU - Köppen, Joachim

AU - Moffat, Anthony F J

AU - Parker, Quentin A.

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N2 - We have found the central star of Abell 70 (PN G038.1-25.4, hereafter A 70) to be a binary consisting of a G8 IV-V secondary and a hot white dwarf. The secondary shows enhanced Ba II and Sr II features, firmly classifying it as a barium star. The nebula is found to have Type-I chemical abundances with helium and nitrogen enrichment, which combined with future abundance studies of the central star, will establish A 70 as a unique laboratory for studying s-process AGB nucleosynthesis.

AB - We have found the central star of Abell 70 (PN G038.1-25.4, hereafter A 70) to be a binary consisting of a G8 IV-V secondary and a hot white dwarf. The secondary shows enhanced Ba II and Sr II features, firmly classifying it as a barium star. The nebula is found to have Type-I chemical abundances with helium and nitrogen enrichment, which combined with future abundance studies of the central star, will establish A 70 as a unique laboratory for studying s-process AGB nucleosynthesis.

KW - binaries: general

KW - binaries: symbiotic

KW - planetary nebulae: general

KW - planetary nebulae: individual (PN G038.1-25.4)

KW - stars: AGB and post-AGB

KW - stars: chemically peculiar

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DO - 10.1017/S1743921312011192

M3 - Conference proceeding contribution

AN - SCOPUS:84865760336

SN - 9781107019836

VL - 7

T3 - Proceedings of the International Astronomical Union

SP - 314

EP - 315

BT - Planetary Nebulae: An Eye to the Future

A2 - Manchado, Arturo

A2 - Stanghellini, Letizia

A2 - Schönberner, Detlef

CY - Cambridge, UK

ER -

A barium-rich binary central star in Abell 70

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