Deuterium and Oxygen Toward Feige 110: Results from the Far Ultraviolet Spectroscopic Explorer (FUSE) Mission

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dc.creatorFriedman, S. D.
dc.creatorHowk, J. C.
dc.creatorChayer, P.
dc.creatorTripp, T. M.
dc.creatorHebrard, G.
dc.creatorAndre, M.
dc.creatorOliveira, C.
dc.creatorJenkins, E. B.
dc.creatorMoos, H. W.
dc.creatorOegerle, W. R.
dc.creatorSonneborn, G.
dc.creatorLamontagne, R.
dc.creatorSembach, K. R.
dc.creatorVidal-Madjar, A.
dc.date2001-11-16
dc.date2001-11-20
dc.date.accessioned2026-07-07T10:31:09Z
dc.date.available2026-07-07T10:31:09Z
dc.descriptionWe present measurements of the column densities of interstellar DI and OI made with the Far Ultraviolet Spectroscopic Explorer (FUSE), and of HI made with the International Ultraviolet Explorer (IUE) toward the sdOB star Feige 110 [(l,b) = (74.09, -59.07); d = 179 +265 -67 pc; z = -154 +57 -227 pc]. Our determination of the DI column density made use of curve of growth fitting and profile fitting analyses, while our OI column density determination used only curve of growth techniques. The HI column density was estimated by fitting the damping wings of the interstellar Ly alpha profile. We find log N(DI) = 15.47 +/- 0.06, log N(OI) = 16.73 +/- 0.10, and log N(HI) = 20.14 +0.13 -0.20 (all errors 2 sigma). This implies D/H = (2.14 +/- 0.82) x 10^-5, D/O = (5.50 +1.64 -1.33) x 10^-2, and O/H = (3.89 +/- 1.67) x 10^-4. Taken with the FUSE results reported in companion papers (Moos et al. 2001) and previous measurements of the local interstellar medium, this suggests the possibility of spatial variability in D/H for sight lines exceeding ~100 pc. This result may constrain models which characterize the mixing time and length scales of material in the local interstellar medium.
dc.description24 pages, 9 figures. Accepted for publication in the Astrophysical Journal Supplement Series. Replacement corrects a typo in original submission
dc.identifierhttps://arxiv.org/abs/astro-ph/0111332
dc.identifierhttp://arxiv.org/abs/astro-ph/0111332
dc.identifierAstrophys.J.Suppl.140:37-50,2002
dc.identifierdoi:10.1086/339132
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178318
dc.subjectAstrophysics
dc.titleDeuterium and Oxygen Toward Feige 110: Results from the Far Ultraviolet Spectroscopic Explorer (FUSE) Mission
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