Can Differences in the Nickel Abundance in Chandrasekhar-Mass Models Explain the Relation between the Brightness and Decline Rate of Normal Type Ia Supernovae?

  title={Can Differences in the Nickel Abundance in Chandrasekhar-Mass Models Explain the Relation between the Brightness and Decline Rate of Normal Type Ia Supernovae?},
  author={P. Mazzali and K. Nomoto and E. Cappellaro and Takayoshi Nakamura and H. Umeda and K. Iwamoto},
  journal={The Astrophysical Journal},
The use of Type Ia supernovae as distance indicators relies on the determination of their brightness. This is not constant, but it can be calibrated using an observed relation between the brightness and the properties of the optical light curve (decline rate, width, shape), which indicates that brighter SNe have broader, slower light curves. However, the physical basis for this relation is not yet fully understood. Among possible causes are different masses of the progenitor white dwarfs or… Expand

Figures and Tables from this paper

Type?Ia Supernova Light Curves
The diversity of Type Ia supernova (SN Ia) photometry is explored using a grid of 130 one-dimensional models. It is shown that the observable properties of SNe Ia resulting from Chandrasekhar-massExpand
The correlation between C/O ratio, metallicity and the initial WD mass for SNe Ia
Context. When type Ia supernovae (SNe Ia) were chosen as distance indicators to measure cosmological parameters, the Phillips relation was applied. However, the origin of the scatter in the maximumExpand
The nebular spectra of the Type Ia supernova 1991bg: further evidence of a non-standard explosion
Type Ia supernovae (SNe Ia) come in a large range of luminosities, as determined mostly by the amount of 56Ni produced in the explosion. Nevertheless, they can be normalized and used as standardExpand
Type Ia supernovae have two physical width-luminosity relations and they favour sub-Chandrasekhar and direct collision models - II. Colour evolution
While the width-luminosity relation among type Ia supernovae (slower is brighter) is one of the best studied properties of this type of events, its physical basis has not been identifiedExpand
On the Origin of the Type Ia Supernova Width-Luminosity Relation
Brighter Type Ia supernovae (SNe Ia) have broader, more slowly declining B-band light curves than dimmer SNe Ia. We study the physical origin of this width-luminosity relation (WLR) using detailedExpand
Spectral luminosity indicators in SNe Ia - Understanding the R(SiII) line strength ratio and beyond
Type la supernovae (SNe la) are good distance indicators because the shape of their light curves, which can be measured independently of distance, varies smoothly with luminosity. This suggests thatExpand
The Effect of Progenitor Age and Metallicity on Luminosity and 56Ni Yield in Type Ia Supernovae
Timmes et al. found that metallicity variations could theoretically account for a 25% variation in the mass of 56Ni synthesized in Type Ia supernovae (SNe Ia), and thus account for a large fractionExpand
Optical Light Curves of Supernovae
Photometry is the most easily acquired information about supernovae. The light curves constructed from regular imaging provide signatures not only for the energy input, the radiation escape, theExpand
Abundance stratification in type Ia supernovae – II. The rapidly declining, spectroscopically normal SN 2004eo
The variation in properties of Type Ia supernovae, the thermonuclear explosions of Chandrasekhar-mass carbon-oxygen white dwarfs, is caused by different nucleosynthetic outcomes of these explosions,Expand
Exploring the spectroscopic diversity of Type Ia supernovae
The velocities and equivalent widths (EWs) of a set of absorption features are measured for a sample of 28 well-observed Type Ia supernovae (SNe Ia) covering a wide range of properties. The values ofExpand


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
We have determined the absolute magnitude at maximum light of SN 1992A by using the turnover magnitude of the globular cluster luminosity function of its parent galaxy, NGC 1380. A recalibration ofExpand
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
Nucleosynthesis in Chandrasekhar Mass Models for Type Ia Supernovae and Constraints on Progenitor Systems and Burning-Front Propagation
The major uncertainties involved in the Chandrasekhar mass models for Type Ia supernovae (SNe Ia) are related to the companion star of their accreting white dwarf progenitor (which determines theExpand
Type Ia supernovae and the Hubble constant
▪ Abstract The focus of this review is the work that has been done during the 1990s on using Type Ia supernovae (SNe Ia) to measure the Hubble constant (H0). SNe Ia are well suited for measuring H0.Expand
The Hubble diagram of the Calan/Tololo type IA supernovae and the value of HO
The Calan/Tololo supernova survey has discovered ~30 Type Ia supernovae out to z~0.1. Using BVI data for these objects and nearby SNe Ia, we have shown that there exists a significant dispersion inExpand
The Peculiar Type Ic Supernova 1997ef: Another Hypernova
SN 1997ef has been recognized as a peculiar supernova from its light curve and spectral properties. The object was classified as a Type Ic supernova (SN Ic) because its spectra were dominated byExpand
A Spectroscopic Analysis of the Energetic Type Ic Hypernova SN 1997ef
The properties of the bright and energetic Type Ic SN 1997ef are investigated using a Monte Carlo spectrum synthesis code. Analysis of the earliest spectra is used to determine the time of outburst.Expand
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
Synthetic Spectra of Hydrodynamic Models of Type Ia Supernovae
We present detailed non-LTE synthetic spectra of hydrodynamic supernovae (SNe) Ia models. We make no assumptions about the form of the spectrum at the inner boundary. We calculate bothExpand