Spectroscopy made easy: A new tool for fitting observations with synthetic spectra

被引：740

作者：

Valenti, JA ^{[1
]}

Piskunov, N ^{[1
]}

机构：

[1] UNIV UPPSALA,ASTRON OBSERV,S-75120 UPPSALA,SWEDEN

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1996年 / 118卷 / 03期

关键词：

radiative transfer; methods; numerical; techniques; spectroscopic; stars; fundamental parameters; sun; atomic data;

D O I：

10.1051/aas:1996222

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 (log gf and van der Waals damping constants), model atmosphere specifications (T-eff, log g), elemental abundances, and radial, turbulent, and rotational velocities. LTE synthesis software handles discontiguous spectral intervals and complex atomic blends. As a demonstration, we fit 26 Fe I lines in the NSO Solar Atlas (Kurucz et al. 1984), determining various solar and atomic parameters.

引用

页码：595 / 603

页数：9

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