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Paper: The sight line towards WD2116+736 with FUSE: H, N, O and more
Volume: 348, Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE
Page: 94
Authors: Sonnentrucker, P.; Dupuis, J.; Vennes, S.; Hebrard, G.; Friedman, S.D.; Oliveira, C.M.; Moos, H.W.
Abstract: WD2116+736 is a hot DA white dwarf probably located outside the Local Bubble. Atomic and molecular gas is seen in the FUSE spectra in the form of H I, C II, C II*, N I, N II, O I, Si II, P II, Ar I, Fe II and H2. This paper presents a study of the gas physical conditions along this sight line. Deuterium is also present toward WD2116+736. Our analysis, however, shows that an accurate measurement cannot be given with the data currently available. Analysis of molecular hydrogen suggests the presence of warm (∼420 K) neutral gas with a molecular fraction of ∼ 10−5. Our results for the O/H, N/H and Fe/H ratios are consistent with the ratios found for the Local Bubble.
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