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arXiv · 1608.04088

HfS, Hyperfine Structure Fitting Tool

Robert Estalella
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Abstract

HfS is a tool to fit the hyperfine structure of spectral lines, with multiple velocity components. The HfS_nh3 procedures included in HfS fit simultaneously the hyperfine structure of the NH$_3$ (J,K)= (1,1) and (2,2) transitions, and perform a standard analysis to derive $T_\mathrm{ex}$, NH$_3$ column density, $T_\mathrm{rot}$, and $T_\mathrm{k}$. HfS uses a Monte Carlo approach for fitting the line parameters. Especial attention is paid to the derivation of the parameter uncertainties. HfS includes procedures that make use of parallel computing for fitting spectra from a data cube.

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Robert Estalella. 2016-08-14. HfS, Hyperfine Structure Fitting Tool. https://doi.org/10.1088/1538-3873%2F129%2F972%2F025003

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