# Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions

@article{Cappellari2017ImprovingTF,
title={Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions},
author={Michele Cappellari},
journal={Monthly Notices of the Royal Astronomical Society},
year={2017},
volume={466},
pages={798-811}
}
• M. Cappellari
• Published 28 July 2016
• Physics
• Monthly Notices of the Royal Astronomical Society
I start by providing an updated summary of the penalized pixel-fitting (pPXF) method, which is used to extract the stellar and gas kinematics, as well as the stellar population of galaxies, via full spectrum fitting. I then focus on the problem of extracting the kinematic when the velocity dispersion $\sigma$ is smaller than the velocity sampling $\Delta V$, which is generally, by design, close to the instrumental dispersion $\sigma_{\rm inst}$. The standard approach consists of convolving… Expand
420 Citations

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