2023•Research Notes of the AASOpen access

The Behavior of He-weak in the Far-UV—Paper I: HD 5737

Richard Monier

Abstract

Abstract The analysis of 28 spectra of the bright B6 He-weak star HD 5737 recorded by the SWP camera on board the International Ultraviolet Explorer reveals one instance of marginal variation of the far-ultraviolet flux of this star from 1300 up to 1700 Å. All the other large aperture spectra show a remarkably constant spectral energy distribution. Over the 6 yr of the IUE mission, HD 5737 has experienced at least two episodes of very strong absorption in the C iv resonance lines at 1548.19 and 1550.77 Å,

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Key concepts: Far ultraviolet, Near ultraviolet, Ultraviolet, Spectral line, Astrophysics, Physics, Absorption spectroscopy, Resonance (particle physics)