2012/12/19 by G. C. Sloan, Sloan, G. C., Dominic Ludovici +2 · 1 citation
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Stellar, planetary, and galactic studies #astro-ph.GA #astro-ph.IM
paper · pdf · doi:10.48550/arxiv.1212.4850
14 pages, 6 figures
arxiv created 2012/12/19 · openalex publication_date 2012/12/19 · arxiv updated 2012/12/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This report describes in detail the generation of a "truth" spectrum of HR 6348, using observations with the Short-Low (SL) module of the Infrared Spectrograph of HR 6348, and the A dwarfs alpha Lac and delta UMi. Using spectral ratios, we can propagate Kurucz models of the A dwarfs to the K giant HR 6348, which can then serve to calibrate the remaining database of SL spectra. Mitigation in the vicinity of the Pfund-a line is necessary to reduce residual artifacts at 7.45 um. In general, the new SL spectrum of HR 6348 has a spectroscopic fidelity of ~0.5% or better. Artifacts from the hydrogen recombination lines in the A dwarfs will generally be smaller than this limit, although the residual artifact from the blend of lines near Pfund-alpha exceeds the limit at ~0.7%.