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

Year: 1996

Type: article

Abstract: 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 ( and van der Waals damping constants), model atmosphere specifications (, ), 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 FeI lines in the NSO Solar Atlas (Kurucz et al. 1984), determining various solar and atomic parameters.

Source: Astronomy & Astrophysics Supplement Series

DOI: 10.1051/aas:1996222

Authors: J. A. Valenti, N. Piskunov

Institutions: Joint Institute for Laboratory Astrophysics, University of Colorado Boulder, Uppsala University

Language: English

Topic: Stellar, planetary, and galactic studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2117914263

FWCI: 3.6

Cites: 2

Cited by: 903

Related to: 10