dense_basis: SED fitting with smooth nonparametric star formation histories

dense_basis is an implementation of the Dense Basis method tailored to SED fitting - in particular, the task of recovering accurate star formation history (SFH) information from galaxy spectral energy distributions (SEDs). The current code is being adapted from its original use-case (simultaneously fitting specific large catalogs of galaxies) to being a general purpose SED fitting code, and acting as a module to compress and decompress SFHs and other time-series.

The code is designed to be intuitive to use, and and consists of three steps to get you started doing SED fitting:

  • defining your priors
  • generating a model atlas (params <-> SEDs) to use while fitting
  • actually fitting your data and visualizing the posteriors

More detailed descriptions of these modules can be found in the tutorials. If you are interested in going off the beaten track and trying different things, please let me know so that I can help you run the code as you’d like!


If you are having issues, please let me know at:

License & Attribution

Copyright 2017-2019 Kartheik Iyer and contributors.

dense_basis is being developed by Kartheik Iyer in a public GitHub repository. The source code is made available under the terms of the MIT license.

If you make use of this code, please cite the recent Dense Basis paper.

Indices and tables