Synopsis
The XSPEC zsmdust model: extinction by dust grains in starburst galaxies.
Syntax
xszsmdust The xszsmdust model is a multiplicative model component.
Description
The model is described at [1] .
Deprecated in Sherpa 4.10.0
The ebv parameter has been renamed e_bmv to match the XSPEC definition. The name ebv can still be used to access the parameter, but this name will be removed in a future release.
Example
>>> create_model_component("xszsmdust", "mdl")
>>> print(mdl)Create a component of the xszsmdust model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.E_BmV thawed 0.1 0 100 mdl.ExtIndex thawed 1 -10 10 mdl.Rv frozen 3.1 0 10 mdl.redshift frozen 0 0 20 z
ATTRIBUTES
The attributes for this object are:
| Attribute | Definition |
|---|---|
| E_BmV | The value of E(B-V) for the line of sight to the source. |
| ExtIndex | The spectral index of the extinction curve. |
| Rv | The ratio of total to selective extinction. |
| redshift | The redshift of the absorber. |
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelZsmdust.html
XSPEC version
CIAO 4.16 comes with support for version 12.13.1e of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.13.1e
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.