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Sakurai’s object: a [WC] star in a new bipolar nebula after VLTP

Published online by Cambridge University Press:  06 October 2025

G. C. Van de Steene Open the ORCID record for G. C. Van de Steene [Opens in a new window] ,
P. A. M. van Hoof ,
S. Kimeswenger ,
M. Hajduk Open the ORCID record for M. Hajduk [Opens in a new window] ,
D. Tafoya ,
J. A. Toalá ,
A. Zijlstra Open the ORCID record for A. Zijlstra [Opens in a new window]  and
D. Barría
G. C. Van de Steene*
Affiliation:
Department of Astronomy & Astrophysics, Royal Observatory of Belgium, Ringlaan 3, 1180 Brussels, Belgium
P. A. M. van Hoof
Affiliation:
Department of Astronomy & Astrophysics, Royal Observatory of Belgium, Ringlaan 3, 1180 Brussels, Belgium
S. Kimeswenger
Affiliation:
Universität Innsbruck, Institut für Astro- und Teilchenphysik, Technikerstr. 25, 6020 Innsbruck, Austria Instituto de Astronomía, Universidad Católica del Norte, Av. Angamos 0610, Antofagasta, Chile
M. Hajduk
Affiliation:
Department of Geodesy, Faculty of Geoengineering, University of Warmia and Mazury, ul. Oczapowskiego 2, 10-719 Olsztyn, Poland
D. Tafoya
Affiliation:
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
J. A. Toalá
Affiliation:
Instituto de Radioastronomía y Astrofísica, UNAM, Ant. Carretera a Pátzcuaro 8701, Ex-Hda. San José de la Huerta, Morelia 58089, Mich., Mexico
A. Zijlstra
Affiliation:
Jodrell Bank Centre for Astrophysics, Alan Turing Building, University of Manchester, Manchester, M13 9PL, UK
D. Barría
Affiliation:
Facultad de Ingeniera y Arquitectura, Universidad Central de Chile, Av. Francisco de Aguirre 0405, La Serena, Coquimbo, Chile
*
Email: g.vandesteene@oma.be
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Abstract

Optical spectra of the Very Late Thermal Pulse (VLTP) object V4334 Sgr have shown a rapidly changing spectrum resulting from shocks in the outflow, which created a new bipolar nebula inside the old nebula. We see C II and C III emission lines emerging typical of a [WC 11-10]-type star. The strong increase of [O III] and [S III] emission lines indicate the possible onset of photoionisation in the new ejecta.

Keywords

stars: planetary nebulaeVLTPbipolar

Information

Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S384: Planetary Nebulae: A Universal Toolbox in the Era of Precision Astrophysics , December 2023 , pp. 444 - 446
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Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of International Astronomical Union

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References

Acker, A. & Neiner, C., 2003, A&A, 403, 659 Google Scholar
Eyres, S. P. S., Smalley, B., Geballe, T. R., et al., 1999, MNRAS, 307, L11 CrossRefGoogle Scholar
Hajduk, M., Zijlstra, A. A., Herwig, F., et al., 2005, Science, 308, 231 CrossRefGoogle Scholar
Herwig, F., Woodward, P. R., Lin, P.-H., et al., 2014, ApJL, 792, L3 CrossRefGoogle Scholar
Hinkle, K. H. & Joyce, R. R. 2014, ApJ, 785, 146 CrossRefGoogle Scholar
Kerber, F., Pirzkal, N., De Marco, O., et al., 2002, ApJL, 581, L39 CrossRefGoogle Scholar
Miller Bertolami, M. M., Althaus, L. G., Serenelli, A. M., et al., 2006, A&A, 449, 313 Google Scholar
Nakano, S., Sakurai, Y., Hazen, M., et al., 1996, IAU Circ., 6322Google Scholar
Reichel, M., Kimeswenger, S., van Hoof, P. A. M., et al., 2022, ApJ, 939, 103 CrossRefGoogle Scholar
Tafoya, D., van Hoof, P. A. M., Toalá, J. A., et al., 2023, A&A, 677, L8 Google Scholar
van de Steene, G. C., van Hoof, P. A. M., Kimeswenger, S., et al., 2017, IAUS, 323, 380 Google Scholar
van Hoof, P. A. M., Hajduk, M., Zijlstra, A. A., et al., 2007, A&A, 471, L9 Google Scholar
van Hoof, P. A. M., Kimeswenger, S., Van de Steene, G., et al., 2018, Galaxies, 6, 79 CrossRefGoogle Scholar
Williams, R., Manea, C., Margon, B., et al., 2021, ApJ, 906, 31 CrossRefGoogle Scholar
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