The Challenges of Observing, Calibrating, and Modeling Stellar Spectral Energy Distributions
Abstract
While optical and quantum efficiency are on the rise, and spectrographs becoming massively multiplexed, measuring spectral energy distributions of astronomical sources with accuracy remains a challenge. In addition to atmospheric refraction, extinction, variability, and limited apertures of instrument entrance slits and optical fibers, accurate calibration is hampered by issues such as a limited choice of reliable standard stars. Modeling stellar spectral energy distributions has seen good progress, but some weaknesses survive, especially for late-type stars. This article provides an overview of these matters and discusses observation, calibration, and modeling strategies for future large spectroscopic surveys.
Keywords
Cite
@article{arxiv.1903.06859,
title = {The Challenges of Observing, Calibrating, and Modeling Stellar Spectral Energy Distributions},
author = {Carlos Allende Prieto},
journal= {arXiv preprint arXiv:1903.06859},
year = {2019}
}
Comments
6 pages, 3 figures, soon to appear in the proceedings of the meeting Radiative Signatures from the Cosmos, A Meeting in honor of Ivan Hubeny, October 2018, Paris, published in the ASP Conf. Series