David A. Simon

The Impact of Non-Gaussian Line Spread Functions on Stellar Kinematic Recovery: Consequences for Dynamical Models

The line spread function (LSF) of a spectrograph encodes the inherent broadening of a single spectral line. It is typically reported as a single number, the resolving power R = λ / Δ λ with Δ λ the FWHM of the LSF. In standard pipelines for extracting stellar kinematics the LSF i...