mjpark-astro / sedpy

Utilities for astronomical spectral energy distributions

sedpy

Modules for storing and operating on astronomical source spectral energy distributions.

Installation & setup:

sedpy is pip installable:

python -m pip install astro-sedpy

Or you can install the latest version from github:

git clone https://github.com/bd-j/sedpy
cd sedpy
pip install .

Then in python, e.g.,

from sedpy import observate
# get magnitude from a spectrum:
filt = observate.Filter("sdss_r0")
mag = filt.ab_mag(angstroms, f_lambda_cgs)
# or get several magnitudes at once
filterlist = observate.load_filters(["galex_NUV", "sdss_r0"])
mags = observate.getSED(angstroms, f_lambda_cgs, filterlist=filters)

For the filters available by default see the filter_list. For adding transmission curves, see these docs.

This code can be referenced as:

Description:

• observate has methods for generating synthetic photometry through any filters, and classes for dealing with filters generally. There is some functionality for spectra (vaccum to air conversions). With a huge debt to Mike Blanton's kcorrect code .
• attenuation contains simple dust attenuation methods.
• smoothing methods for smoothing well-sampled spectra.
• extinction (Deprecated) classes for a detailed modeling of extinction curves, following the Fitzpatrick & Massa parameterizations. See dust_extinction instead.