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Type Ia Supernova Data

Source Notebook

Supernova type Ia name, redshift, magnitude, stretch and color

Details

The redshift z of an object is defined as z=(λobs-λ0)/λ0 where λobs is the observed wavelength and λ0 is the emitted wavelength. When z>0 then the object is redshifted and is receding from the observer. In general larger values of redshift correspond to objects that are more distant.
The observed magnitude m of an an object is a reverse logarithmic measure of the flux from the object for an observer on earth. If F is the measured flux and Fref is a reference flux then the magnitude is m=-2.5log10(F/Fref). Faint objects have larger magnitudes than bright objects.
Stretch is a measure of how fast the supernova explosion declines in brightness. Color is the B-V color at peak brightness.

Examples

Basic Examples

In[1]:=
data = ResourceData[\!\(\* TagBox["\"\<Type Ia Supernova Data\>\"", #& , BoxID -> "ResourceTag-Type Ia Supernova Data-Input", AutoDelete->True]\)]
Out[1]=

Visualizations (2) 

Obtain the necessary data:

In[2]:=
data = ResourceData[\!\(\* TagBox["\"\<Type Ia Supernova Data\>\"", #& , BoxID -> "ResourceTag-Type Ia Supernova Data-Input", AutoDelete->True]\)]; zRedshift = Normal@data[Normal@All, 2]; mObserved = Normal@data[Normal@All, 3];

Plot observed magnitude of supernova versus redshift:

In[3]:=
ListPlot[Transpose[{zRedshift, mObserved}], PlotRange -> All, Axes -> False, Frame -> True, FrameTicks -> True, FrameLabel -> {"redshift", "observed magnitude"}, ImageSize -> 500, PlotRange -> All]
Out[3]=

Marshall Bradley, "Type Ia Supernova Data" from the Wolfram Data Repository (2022)  

Data Resource History

  • Date Created:

Source Metadata

  • Citation:
    • Betoule, M., et. al. (2014),"Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples", Astron. Astrophysics. 568, A22.

Data Downloads

Publisher Information

  • Prepared for the Wolfram Data Repository By: Marshall Bradley
  • Publisher of Record: Marshall Bradley