HfS, Hyperfine Structure Fitting Tool

2016/08/14 by Robert Estalella · 1 citation
Physics and Astronomy · #astro-ph.IM

paper · pdf · doi:10.1088/1538-3873/129/972/025003

19 pages, accepted by PASP

arxiv created 2016/08/14 · arxiv updated 2017/01/18

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 NH₃ (J,K)= (1,1) and (2,2) transitions, and perform a standard analysis to derive T_ex, NH₃ column density, T_rot, and T_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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