The Case against the progenitor's carbon - to - oxygen ratio as a source of peak luminosity variations in Type Ia supernovae

@article{Roepke2004TheCA,
  title={The Case against the progenitor's carbon - to - oxygen ratio as a source of peak luminosity variations in Type Ia supernovae},
  author={F. Roepke and W. Hillebrandt},
  journal={Astronomy and Astrophysics},
  year={2004},
  volume={420}
}
One of the major challenges for theoretical modeling of type Ia supernova explosions is to explain the diversity of these events and the empirically established correlation between their peak luminosity and light curve shape. In the framework of the so-called Chandrasekhar mass models, the progenitor's carbon-to-oxygen ratio has been suggested as a principal source of peak luminosity variations due to a variation in the production of radioactive 56 Ni during the explosion. We describe a mech… Expand

Figures and Tables from this paper

The white dwarf's carbon fraction as a secondary parameter of Type Ia supernovae
Context. Binary stellar evolution calculations predict that Chandrasekhar-mass carbon/oxygen white dwarfs (WDs) show a radially varying profile for the composition with a carbon depleted core. ManyExpand
The Progenitors of Type Ia Supernovae
Type Ia supernovae are identified as exploding degenerate stars. Their luminosity is due to the radioactive decay of about a solar mass of 56Ni through 56Co to 56Fe. As such they are a major sourceExpand
Constraints on the progenitor systems of type Ia supernovae
Bolometric light curves provide a valuable insight into the nature of type Ia supernovae. We present an analysis of sixteen well-observed type Ia supernovae. Constraints are placed on several globalExpand
Type Ia supernova diversity in three-dimensional models
Context. The use of type Ia supernovae as distance indicators for cosmology has initiated a search for theoretical arguments supporting the empirical calibration methods applied. As a first step, aExpand
Accreting carbon–oxygen white dwarfs at explosive C ignition
The conditions at which an accreting carbon-oxygen white dwarf (CO WD) ignites C explosively have been considered to be possibly responsible for the maximum luminosity of Type Ia supernovae (SNe Ia).Expand
The influence of chemical composition on models of Type Ia supernovae
Type Ia supernovae are bright stellar explosions distinguished by standardizable light curves that allow for their use as distance indicators for cosmological studies. Despite the highly successfulExpand
Metallicity effect in multi-dimensional SNIa nucleosynthesis
We investigate the metallicity effect (measured by the original 22 Ne content) on the detailed nucleosynthetic yields for 3D hydrodynamical simulations of the thermonuclear burning phase in type IaExpand
Progenitors of type Ia supernovae
Type Ia supernovae (SNe Ia) play an important role in astrophysics and are crucial for the studies of stellar evolution, galaxy evolution and cosmology. They are generally thought to be thermonuclearExpand
Host Galaxy Effects in the Susy Model for Supernovae Ia
For more than forty years virtually all work on the theory of type Ia Supernovae (SN Ia) has assumed that these explosions were due to the transfer of mass to a degenerate star from a partner in aExpand
Three-dimensional modeling of type Ia supernovae - The power of late time spectra
Late time synthetic spectra of type Ia supernovae, based on three-dimensional deflagration models, are presented. We mainly focus on one model, “c3_3d_256_10s”, for which the hydrodynamics (RopkeExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 18 REFERENCES
On variations in the peak luminosity of type ia supernovae
We explore the idea that the observed variations in the peak luminosities of Type Ia supernovae (SNe Ia) originate in part from a scatter in metallicity of the main-sequence stars that become whiteExpand
Type Ia Supernovae: Influence of the Initial Composition on the Nucleosynthesis, Light Curves, and Spectra and Consequences for the Determination of ΩM and Λ
The influence of the initial composition of the exploding white dwarf on the nucleosynthesis, light curves, and spectra of Type Ia supernovae has been studied in order to evaluate the size ofExpand
The Physics of Type Ia Supernova Light Curves. I. Analytic Results and Time Dependence
We develop an analytic solution of the radiation transport problem for Type Ia supernovae (SNe Ia) and show that it reproduces bolometric light curves produced by more detailed calculations under theExpand
A possible model of supernovae: Detonation of12C
Stars of intermediate mass (4M⊙≲M≲9M⊙) may ignite the12C+12C reaction explosively because of the high degree of electron degeneracy in their central regions. After the exhaustion of helium burning inExpand
Type I supernovae. I. Analytic solutions for the early part of the light curve
Analytic solutions for light curves, effective temperatures, and broad-band colors of Type I supernovae are presented. The method is generalized to include effects of finite (large) initial radiusExpand
The conductive propagation of nuclear flames. I. Degenerate C+O and O+ Ne + Mg white dwarfs
The paper determines the physical properties - speed, width, and density structure - of conductive burning fronts in degenerate carbon-oxygen (C + O) and oxygen-neon-magnesium (O + Ne + Mg)Expand
Type Ia Supernovae
Summary. Type Ia Supernovae are in many aspects still enigmatic objects. Their observational and theoretical exploration is in full swing, but we still have plenty to learn about theseExpand
The Absolute Magnitudes of Type IA Supernovae
Absolute magnitudes in the B, V, and I bands are derived for nine well-observed Type Ia supernovae, using host galaxy distances estimated via the surface brightness fluctuations or Tully-FisherExpand
Three-dimensional simulations of type Ia supernovae
We present the results of three-dimensional hydrodynamical simulations of the subsonic thermonuclear burning phase in type Ia supernovae. The burning front model contains no adjustable parameters soExpand
Thermonuclear Supernovae: Simulations of the Deflagration Stage and Their Implications
Large-scale, three-dimensional numerical simulations of the deflagration stage of a thermonuclear supernova explosion show the formation and evolution of a highly convoluted turbulent flame in theExpand
...
1
2
...