IRS-TR 12001: Spectral Pointing-Induced Throughput Error and Spectral Shape in Short-Low Order 1
Instrumentation and Methods for Astrophysics
2012-12-21 v1 Astrophysics of Galaxies
Abstract
We investigate how the shape of a spectrum in the Short-Low module on the IRS varies with its overall throughput, which depends on how well centered a source is in the spectroscopic slit. Using flux ratios to quantify the overall slope or color of the spectrum and plotting them vs. the overall throughput reveals a double-valued function, which arises from asymmetries in the point spread function. We use this plot as a means of determining which individual spectra are valid for calibrating the IRS.
Keywords
Cite
@article{arxiv.1212.4843,
title = {IRS-TR 12001: Spectral Pointing-Induced Throughput Error and Spectral Shape in Short-Low Order 1},
author = {G. C. Sloan and D. Ludovici},
journal= {arXiv preprint arXiv:1212.4843},
year = {2012}
}
Comments
9 pages, 3 figures