xsredden

Context: models

Synopsis

The XSPEC redden model: interstellar extinction.

Syntax

xsredden

The xsredden 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("xsredden", "mdl")
>>> print(mdl)

Create a component of the xsredden model and display its default parameters. The output is:

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.E_BmV    thawed         0.05            0           10

ATTRIBUTES

The attribute for this object is:

Attribute	Definition
E_BmV	The value of E(B-V) for the line of sight to the source.

References

[1] https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelRedden.html

XSPEC version

CIAO 4.15 comes with support for version 12.12.1c of the XSPEC models. This can be checked with the following:

% python -c 'from sherpa.astro import xspec;
print(xspec.get_xsversion())'
12.12.1c

Bugs

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.