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Common envelope evo...
Common envelope evolution in born-again planetary nebulae - Shaping the H-deficient ejecta of A 30
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- Rodriguez-Gonzalez, J. B. (författare)
- Universidad Nacional Autónoma de México (UNAM),Universidad Nacional Autonoma de Mexico
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- Santamaria, E. (författare)
- Universidad de Guadalajara,University of Guadalajara
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- Toala, J. A. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council,Universidad Nacional Autónoma de México (UNAM),Universidad Nacional Autonoma de Mexico
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- Guerrero, M. A. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Montoro-Molina, B. (författare)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Rubio, G. (författare)
- Universidad de Guadalajara,University of Guadalajara
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- Tafoya, Daniel, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Chu, Y-H (författare)
- Academia Sinica Taiwan
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- Ramos-Larios, G. (författare)
- Universidad de Guadalajara,University of Guadalajara
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- Sabin, L. (författare)
- Universidad Nacional Autónoma de México (UNAM),Universidad Nacional Autonoma de Mexico
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(creator_code:org_t)
- 2022-06-29
- 2022
- Engelska.
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Ingår i: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 514:4, s. 4794-4802
- Relaterad länk:
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Born-again planetary nebulae (PNe) are extremely rare cases in the evolution of solar-like stars. It is commonly accepted that their central stars (CSPN) experienced a very late thermal pulse (VLTP), ejecting H-deficient material inside the evolved H-rich PN. Given the short duration of this event and the fast subsequent evolution of the CSPN, details of the mass ejection are unknown. We present the first morphokinematic model of the H-deficient material surrounding a born-again PN, namely A 30. New San Pedro Martir observations with the Manchester Echelle Spectrograph were recently obtained to map the inner region of A 30 which are interpreted by means of the software shape in conjunction with HST WFC3 images. The shape morphokinematic model that best reproduces the observations is composed by a disrupted disc tilted 37 degrees with respect to the line of sight and a pair of orthogonal opposite bipolar ejections. We confirm previous suggestions that the structures closer to the CSPN present the highest expansion velocities, that is, the disrupted disc expands faster than the farther bipolar features. We propose that the current physical structure and abundance discrepancy of the H-deficient clumps around the CSPN of A 30 can be explained by a common envelope phase following the VLTP event. Our proposed scenario is also compared with other known born-again PNe (A 58, A 78, HuBi 1, and the Sakurai's Object).
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- planetary nebulae: individual: PN A66 30
- stars: mass-loss
- circumstellar matter
- stars: evolution
- stars: winds, outflows
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Rodriguez-Gonzal ...
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Santamaria, E.
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Toala, J. A.
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Guerrero, M. A.
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Montoro-Molina, ...
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Rubio, G.
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visa fler...
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Tafoya, Daniel, ...
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Chu, Y-H
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Ramos-Larios, G.
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Sabin, L.
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visa färre...
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