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# Extinction Curves

Few extinction curves have been included in `speXtra`

To list the names of the extinction curves included in the database

```{code-cell} ipython3
    from spextra import spextra_database
    spextra_database["extinction_curves"]
```

## Gordon

```{literalinclude} ../database/extinction_curves/gordon/index.yml
:language: yaml
```

## Cardelli

```{literalinclude} ../database/extinction_curves/cardelli/index.yml
:language: yaml
```

## Calzetti

```{literalinclude} ../database/extinction_curves/calzetti/index.yml
:language: yaml
```