Report on the O IV and S IV lines observed by IRIS

2015/09/16 by Peter R. Young, Young, Peter R.
Chemistry · Engineering · Environmental Science · #Atmospheric and Environmental Gas Dynamics #FOS: Physical sciences #Laser Design and Applications #Solar and Stellar Astrophysics (astro-ph.SR) #Spectroscopy and Laser Applications

paper · pdf · doi:10.48550/arxiv.1509.05011

openalex publication_date 2015/09/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The O IV intercombination lines observed by the Interface Region Imaging Spectrograph (IRIS) between 1397 and 1407 A provide useful density diagnostics. This document presents data that address two issues related to these lines: (1) the contribution of S IV to the O IV 1404.8 line; and (2) the range of sensitivity of the O IV 1399.8/1401.2 ratio.

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