The second death of Sakurai's Object (V4334 Sgr)

Albert A. Zijlstra; Marcin Hajduk; Falk Herwig; Peter Van Hoof; Florian Kerber

doi:10.1063/1.2146270

The second death of Sakurai's Object (V4334 Sgr)

Albert A. Zijlstra, Marcin Hajduk, Falk Herwig, Peter Van Hoof, Florian Kerber

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

Abstract

The discovery of Sakurai's Object, in 1996, provided the first modern observations of a very late thermal pulse. Models predicted that it would become a born-again planetary nebula over a few hundred years. It is however evolving very much faster: the first radio detection shows that ionization of the envelope has already started. To reproduce its unexpectedly fast evolution, we have developed a model in which convective mixing is strongly suppressed under the influence of flash burning. A strong prediction of this model is that the star will evolve back to very high temperatures at equally accelerated time scales. A CLOUDY photoionization model of the hydrogen-poor nebula indicates an ionized ejecta (carbon) mass of ∼ 10-3 M⊙, indicating that born-again objects may be significant contributors to carbonaceous dust in the galaxy. © 2005 American Institute of Physics.

Original language	English
Title of host publication	AIP Conference Proceedings\|AIP Conf. Proc.
Pages	183-186
Number of pages	3
Volume	804
DOIs	https://doi.org/10.1063/1.2146270
Publication status	Published - 28 Nov 2005
Event	International Conference on Planetary Nebulae as Astronomical Tools - Gdansk Duration: 28 Nov 2005 → …

Conference

Conference	International Conference on Planetary Nebulae as Astronomical Tools
City	Gdansk
Period	28/11/05 → …

Keywords

Circumstellar matter
Evolution
Individual: V4334 Sgr
Stars: Post-AGB

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10.1063/1.2146270

Cite this

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title = "The second death of Sakurai's Object (V4334 Sgr)",

abstract = "The discovery of Sakurai's Object, in 1996, provided the first modern observations of a very late thermal pulse. Models predicted that it would become a born-again planetary nebula over a few hundred years. It is however evolving very much faster: the first radio detection shows that ionization of the envelope has already started. To reproduce its unexpectedly fast evolution, we have developed a model in which convective mixing is strongly suppressed under the influence of flash burning. A strong prediction of this model is that the star will evolve back to very high temperatures at equally accelerated time scales. A CLOUDY photoionization model of the hydrogen-poor nebula indicates an ionized ejecta (carbon) mass of ∼ 10-3 M⊙, indicating that born-again objects may be significant contributors to carbonaceous dust in the galaxy. {\textcopyright} 2005 American Institute of Physics.",

keywords = "Circumstellar matter, Evolution, Individual: V4334 Sgr, Stars: Post-AGB",

author = "Zijlstra, {Albert A.} and Marcin Hajduk and Falk Herwig and {Van Hoof}, Peter and Florian Kerber",

year = "2005",

month = nov,

day = "28",

doi = "10.1063/1.2146270",

language = "English",

isbn = "0735402949",

volume = "804",

pages = "183--186",

booktitle = "AIP Conference Proceedings|AIP Conf. Proc.",

note = "International Conference on Planetary Nebulae as Astronomical Tools ; Conference date: 28-11-2005",

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TY - GEN

T1 - The second death of Sakurai's Object (V4334 Sgr)

AU - Zijlstra, Albert A.

AU - Hajduk, Marcin

AU - Herwig, Falk

AU - Van Hoof, Peter

AU - Kerber, Florian

PY - 2005/11/28

Y1 - 2005/11/28

N2 - The discovery of Sakurai's Object, in 1996, provided the first modern observations of a very late thermal pulse. Models predicted that it would become a born-again planetary nebula over a few hundred years. It is however evolving very much faster: the first radio detection shows that ionization of the envelope has already started. To reproduce its unexpectedly fast evolution, we have developed a model in which convective mixing is strongly suppressed under the influence of flash burning. A strong prediction of this model is that the star will evolve back to very high temperatures at equally accelerated time scales. A CLOUDY photoionization model of the hydrogen-poor nebula indicates an ionized ejecta (carbon) mass of ∼ 10-3 M⊙, indicating that born-again objects may be significant contributors to carbonaceous dust in the galaxy. © 2005 American Institute of Physics.

AB - The discovery of Sakurai's Object, in 1996, provided the first modern observations of a very late thermal pulse. Models predicted that it would become a born-again planetary nebula over a few hundred years. It is however evolving very much faster: the first radio detection shows that ionization of the envelope has already started. To reproduce its unexpectedly fast evolution, we have developed a model in which convective mixing is strongly suppressed under the influence of flash burning. A strong prediction of this model is that the star will evolve back to very high temperatures at equally accelerated time scales. A CLOUDY photoionization model of the hydrogen-poor nebula indicates an ionized ejecta (carbon) mass of ∼ 10-3 M⊙, indicating that born-again objects may be significant contributors to carbonaceous dust in the galaxy. © 2005 American Institute of Physics.

KW - Circumstellar matter

KW - Evolution

KW - Individual: V4334 Sgr

KW - Stars: Post-AGB

U2 - 10.1063/1.2146270

DO - 10.1063/1.2146270

M3 - Conference contribution

SN - 0735402949

SN - 9780735402942

VL - 804

SP - 183

EP - 186

BT - AIP Conference Proceedings|AIP Conf. Proc.

T2 - International Conference on Planetary Nebulae as Astronomical Tools

Y2 - 28 November 2005

ER -

The second death of Sakurai's Object (V4334 Sgr)

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Keywords

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