A small, fast, interactive viewer for SPS spectra, using Non-negative Matrix Factorisation (NMF) and bilinear interpolation for reconstruction.
Sengi is being actively developed on github. If you find any bugs, or wish to make a feature request, please submit an issue.
Because of the nature of the NMF reconstruction the spectra generated by Sengi will not be exact. We show in the associated paper that the accuracy is sufficient for prototyping and education purposes, however for science purposes the original models should always be used.
@ARTICLE{2019arXiv191112713L,
author = {{Lovell}, Christopher C.},
title = "{Sengi: a small, fast, interactive
viewer for spectral outputs from stellar
population synthesis models}",
journal = {arXiv e-prints},
keywords = {Astrophysics - Instrumentation and Methods
for Astrophysics, Astrophysics - Astrophysics of Galaxies},
year = "2019",
month = "Nov",
eid = {arXiv:1911.12713},
pages = {arXiv:1911.12713},
archivePrefix = {arXiv},
eprint = {1911.12713},
primaryClass = {astro-ph.IM},
adsurl = {https://ui.adsabs.harvard.edu/abs/2019arXiv191112713L},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
We would like to thank all of the SPS owners for permission to use their models.
IMF: Initial Mass Function
SPS: Stellar Population Synthesis
SSP: Simple Stellar Population
NMF: Non-negative Matrix Factorisation
PCA: Principal Component Analysis
Uses the skeleton theme.