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Related papers: Evolution of Planetary Nebulae I. An improved synt…

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The recent HST optical images, and the optical and ultraviolet spectra, of Magellanic planetary nebulae (PNe), together with the large data-base that has been collected in the past decade, allows unprecedented insight in the evolution of…

Astrophysics · Physics 2007-05-23 Letizia Stanghellini

The evolution of central stars of planetary nebulae can proceed in several distinct ways, either leading to H-deficiency or to H-normal surface composition. Several new simulations of the evolution channels that lead to H-deficiency are now…

Astrophysics · Physics 2009-11-11 Falk Herwig , Bernd Freytag , Klaus Werner

The nebular evolution is followed from the vicinity of the asymptotic-giant branch across the Hertzsprung-Russell diagram until the white-dwarf domain is reached, using various central-star models coupled to different initial envelope…

Astrophysics · Physics 2007-09-26 D. Schoenberner , R. Jacob , M. Steffen , C. Sandin

Context: In recent years mid- and far infrared spectra of planetary nebulae have been analysed and lead to more accurate abundances. It may be expected that these better abundances lead to a better understanding of the evolution of these…

Astrophysics of Galaxies · Physics 2015-05-19 S. R. Pottasch , J. Bernard-Salas

Our understanding of planetary nebulae has been significantly enhanced as a result of several recent large surveys (Parker et al., these proceedings). These new discoveries suggest that the `PN phenomenon' is in fact more heterogeneous than…

Astrophysics of Galaxies · Physics 2015-06-04 D. J. Frew , Q. A. Parker

By means of hydrodynamical models we do the first investigations of how the properties of planetary nebulae are affected by their metal content and what can be learned from spatially unresolved spectrograms of planetary nebulae in distant…

Solar and Stellar Astrophysics · Physics 2010-11-30 D. Schönberner , R. Jacob , C. Sandin , M. Steffen

We have selected a group of 100 evolved planetary nebulae (PNe) and study their kinematics based upon spatially-resolved, long-slit, echelle spectroscopy. The data have been drawn from the San Pedro M\'artir Kinematic Catalogue of PNe…

Solar and Stellar Astrophysics · Physics 2019-08-19 Margarita Pereyra , Michael G. Richer , José Alberto López

Using a radiation-gasdynamics code the evolution of spherical planetary nebulae is followed, while taking into account the evolution of central star and the fast wind. These models show the importance of ionization fronts for the structure…

Astrophysics · Physics 2007-05-23 Garrelt Mellema

The evolution of central stars of planetary nebulae was so far documented in just a few cases. However, spectra collected a few decades ago may provide a good reference for studying the evolution of central stars using the emission line…

Solar and Stellar Astrophysics · Physics 2014-11-11 Marcin Hajduk , Peter A. M. van Hoof , Albert A. Zijlstra

Planetary nebulae (PNe) represent the near endpoints of evolution for stars of initial mass $\sim$1-8 $M_\odot$, wherein the envelope of an asymptotic giant branch (AGB) star becomes photodissociated and ionized by high-energy radiation…

Solar and Stellar Astrophysics · Physics 2018-10-17 Joel H. Kastner , Albert Ziljstra , Bruce Balick , Raghvendra Sahai

We analysed the planetary nebula Hen 2-260 using optical spectroscopy and photometry. We compared our observations with the data from literature to search for evolutionary changes. The nebular line fluxes were modelled with the Cloudy…

Solar and Stellar Astrophysics · Physics 2014-07-09 M. Hajduk , P. A. M. van Hoof , K. Gesicki , A. A. Zijlstra , S. K. Górny , M. Gładkowski

Based on time-dependent radiation-hydrodynamics simulations of the evolution of Planetary Nebulae (PNe), we have carried out a systematic parameter study to address the non-trivial question of how the diffuse X-ray emission of PNe with…

Solar and Stellar Astrophysics · Physics 2015-05-30 M. Steffen , C. Sandin , R. Jacob , D. Schoenberner

The LMC is ideal for studying the co-evolution of planetary nebulae (PNe) and their central stars, in that the debilitating uncertainties of the Galactic PN distance scale and selection biases from attenuation by interstellar dust do not…

We present a brief review on the formation and evolution of hydrogen deficient central stars of planetary nebulae. We include a detailed description of the main observable features of both the central stars and their surrounding nebulae and…

Solar and Stellar Astrophysics · Physics 2024-12-31 Marcelo M. Miller Bertolami

Studies of the relationship between planetary nebula morphology and the evolution of the central stars has long suffered from uncertainties in distance determinations, and from the bias of interstellar absorption, that are typical for…

Astrophysics · Physics 2007-05-23 L. Stanghellini , R. A. Shaw , J. C. Blades , B. Balick

We have obtained multi-wavelength observations of compact Galactic planetary nebulae (PNe) to probe post-Asymptotic Giant Branch (AGB) evolution from the onset of nebular ejection. We analyze new observations from HST to derive the masses…

Solar and Stellar Astrophysics · Physics 2016-09-07 Manuel Moreno-Ibáñez , Eva Villaver , Richard A. Shaw , Letizia Stanghellini

We describe a revised procedure for the numerical simulation of planetary nebulae luminosity functions (PNLF), improving on previous work (M\'endez & Soffner 1997). The procedure now is based on new H-burning post-AGB evolutionary tracks…

Astrophysics of Galaxies · Physics 2019-12-13 Lucas M. Valenzuela , Roberto H. Méndez , Marcelo M. Miller Bertolami

Planetary nebulae (PN) represent the evolutionary fate of the asymptotic giant branch (AGB) stellar envelopes, thus are ideally suited to study the chemical impact of AGB stars. Stellar evolution predict elemental enrichment through the AGB…

Astrophysics · Physics 2007-05-23 Letizia Stanghellini

Two-dimensional hydrodynamical simulations are presented from the formation up to the late evolution of planetary nebula, for 6 different stellar models from 1 to 5 Mo. The hydrodynamical models use stellar evolution calculations as inner…

Solar and Stellar Astrophysics · Physics 2025-10-13 Guillermo Garcia-Segura , Arturo Manchado , Jesus A. Toala , Martin A. Guerrero , Alberto J. Castro-Tirado

Planetary nebulae (PNe) provide tests of stellar evolution, can serve as tracers of chemical evolution in the Milky Way and other galaxies, and are also used as a calibrator of the cosmological distance ladder. Current and upcoming large…

Solar and Stellar Astrophysics · Physics 2019-07-10 George Vejar , Rodolfo Montez , Margaret Morris , Keivan G. Stassun
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