galsynthspec 0.1.0

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galsynthspec

Galaxy Synthetic Spectrum fitting

Galsynthspec is a Python package for fitting synthetic galaxy spectra to observed data. It is designed to work with the sfdmap package for spectral fitting and provides tools for analyzing and visualizing the results.

It combines three key features:

1. Coordinate-based photometry retrieval using the astroquery package, allowing users to fetch photometric data from various surveys.
2. Galaxy fitting using prospector, enabling users to fit galaxy spectra with a variety of models.
3. Analysis and visualization tools for the fitted spectra.

If you are working with transient data, galsynthspec can also use TNS to resolve transient names to their respective coordinates, and identify a likely host using PS1.

Installation

You can try the gard way:

git clone [e-mail]:robertdstein/galsynthspec.git
cd galsynthspec
pip install -e ".[dev]"
pre-commit install

galsynthspec also uses the sfdmap package for extinction corrections. While the package will be installed when using pip, it requires additional data files to function properly. To set up the data files, run the following command:

Set the environment variable SFD_DATA_DIR to the directory where you want to store the data files, and then run:

wget https://github.com/kbarbary/sfddata/archive/master.tar.gz
tar xzf master.tar.gz

You also need to install https://github.com/cconroy20/fsps

You can try the easy way, with Docker:

docker pull robertdstein/galsynthspec:latest

Then, you can run the container with:

docker run -v /my/local/dir:/mydata robertdstein/galsynthspec by-name AT2019fdr

This will map /my/local/dir on your host machine to /mydata in the container, allowing you to access the data files from within the container. It will also run the by-name command with the transient name AT2019fdr, which will resolve the name to its coordinates and fetch the photometric data.