Spectroscopy Made Easy: A New Tool for Fitting Observations with Synthetic Spectra
Spectroscopy Made Easy: A New Tool for Fitting Observations with Synthetic Spectra
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DOI:
10.1051/aas:1996222
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发表时间:
1996-09
期刊:
影响因子:
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通讯作者:
J. Valenti;N. Piskunov
中科院分区:
文献类型:
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作者:
J. Valenti;N. Piskunov
We describe a new software package that may be used to determine stellar and atomic parameters by matching observed spectra with synthetic spectra generated from parameterized atmospheres. A nonlinear least squares algorithm is used to solve for any subset of allowed parameters, which include atomic data (loggf and van der Waals damping constants), model atmosphere specications (Te ,l og g), elemental abundances, and radial, turbulent, and rotational velocities. LTE synthesis software handles discontiguous spectral intervals and complex atomic blends. As a demonstration, we t 26 Fe I lines in the NSO Solar Atlas (Kurucz et al. 1984), determining various solar and atomic parameters.