Common Envelope Shaping of Planetary Nebulae. IV. From Proto-planetary to Planetary Nebula

Guillermo García-Segura, Ronald E Taam, Paul M Ricker

Research output: Contribution to journalArticlepeer-review

Abstract

We present 2D hydrodynamical simulations of the transition of a protoplanetary nebula (PPN) to a planetary nebula for central stars in binary systems that have undergone a common-envelope event. After 1000 yr of magnetically driven dynamics (PPN phase), a line-driven stellar wind is introduced into the computational domain and the expansion of the nebula is simulated for another 10 000 yr, including the effects of stellar photoionization. In this study we consider central stars with main sequence (final) masses of 1 (0.569) and 2.5 (0.677) M⊙, together with a 0.6-M⊙ main-sequence companion. Extremely bipolar, narrow-waisted PPNe result in bipolar planetary nebulae, while the rest of the shapes mainly evolve into elliptical planetary nebulae. The initial magnetic field's effects on the collimated structures, such as jets, tend to disappear in most of the cases, leaving behind the remnants of those features in only a few cases. Equatorial zones fragmented mainly by photoionization (1-M⊙progenitors), result in 'necklace' structures made of cometary clumps aligned with the radiation field. On the other hand, fragmentation by photoionization and shocked wind (2.5-M⊙progenitors) give rise to the formation of multiple clumps in the latitudinal direction, which remain within the lobes, close to the center, which are immersed and surrounded by hot shocked gas, not necessarily aligned with the radiation field. These results reveal that the fragmentation process has a dependence on the stellar-mass progenitor. This fragmentation is made possible by the distribution of gas in the previous post-common-envelope PPN as sculpted by the action of the jets.

Original languageEnglish (US)
Article numberstac2824
Pages (from-to)3822-3831
Number of pages10
JournalMonthly Notices of the Royal Astronomical Society
Volume517
Issue number3
Early online dateOct 3 2022
DOIs
StatePublished - Dec 1 2022

Keywords

  • Stars: Evolution
  • ISM: individual (Hubble 5, NGC 6302, NGC 2440)
  • ISM: planetary nebulae
  • Stars: binaries
  • Stars: AGB and post-AGB
  • Stars: Rotation
  • stars: evolution
  • stars: AGB and post-AGB
  • stars: rotation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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