This is a software package that originally looked at plasma in the corona, the very hot atmosphere of our sun, but it has proven useful for other astrophysical projects as well, the authors say on their web page. It specifically looks at spectroscopic data, which is a technique that shows the "signature" of different elements inside of the sun or other objects. You can read and look at the code here.
Image: The star-forming system LH 95, located in the Large Magellanic Cloud about 160,000 light-years from Earth. The image was obtained by the Hubble Space Telescope. Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration Acknowledgment: D. Gouliermis (Max Planck Institute for Astronomy, Heidelberg)