Synopsis
The XSPEC ismdust model: Extinction due to a power-law distribution of dust grains.
Syntax
xsismdust The xsismdust model is a multiplicative model component.
Description
The model is described at [1] .
Example
>>> create_model_component("xsismdust", "mdl") >>> print(mdl)
Create a component of the xsismdust model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.msil thawed 1 0 100000 10^-4 mdl.mgra thawed 1 0 100000 10^-4 mdl.redshift frozen 0 -1 10
ATTRIBUTES
The attributes for this object are:
Attribute | Definition |
---|---|
msil | The dust mass column for silicate (in units of 10^-4). |
mgra | The dust mass column for graphite (in units of 10^-4). |
redshift | The redshift of the absorber. |
References
- [1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelIsmdust.html
Changes in CIAO
New in CIAO 4.14
The xsismdust model (added in XSPEC 12.11.0) is new in CIAO 4.14.
XSPEC version
CIAO 4.14 comes with support for version 12.12.0 of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.12.0
Bugs
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.
See Also
- models
- xsolivineabs