Remarks on statistical errors in equivalent widths
Astrophysics
2010-11-11 v4
Abstract
Equivalent width measurements for rapid line variability in atomic spectral lines are degraded by increasing error bars with shorter exposure times. We derive an expression for the error of the line equivalent width with respect to pure photon noise statistics and provide a correction value for previous calculations.
Cite
@article{arxiv.astro-ph/0606341,
title = {Remarks on statistical errors in equivalent widths},
author = {Klaus Vollmann and Thomas Eversberg},
journal= {arXiv preprint arXiv:astro-ph/0606341},
year = {2010}
}
Comments
4 pages, 1 figure, accepted by Astronomical Notes