A Simple Code for Rotational Broadening of Broad Wavelength Range High-Dispersion Spectra
Adolfo S. Carvalho, Christopher M. Johns‐Krull
Abstract
Abstract In high dispersion spectra of rotating bodies such as stars and planets, the rotation contributes significantly to, and sometimes dominates, the line broadening. We present a simple method for rotationally broadening large wavelength ranges of high-dispersion spectra. The broadening is rapid and scales linearly with the length of the spectrum array. For large wavelength ranges, the method is much faster than the popular convolution-based broadening. We provide the code implementation of this method in a publicly accessible repository.
Topics & Concepts
Spectral lineDispersion (optics)WavelengthDoppler broadeningHomogeneous broadeningPhysicsCode (set theory)Rotation (mathematics)Convolution (computer science)Line (geometry)Simple (philosophy)OpticsComputational physicsComputer scienceMathematicsAstronomyGeometryArtificial neural networkMachine learningEpistemologySet (abstract data type)PhilosophyProgramming languageStellar, planetary, and galactic studiesAstronomy and Astrophysical ResearchAstronomical Observations and Instrumentation