Title of article
The deuterium-to-oxygen ratio in the local interstellar medium from FUSE observations
Author/Authors
Hébrard، نويسنده , , G. and Friedman، نويسنده , , S.D. and Kruk، نويسنده , , J.W and Lehner، نويسنده , , N. and Lemoine، نويسنده , , M. and Linsky، نويسنده , , J.L. and Moos، نويسنده , , H.W. and Oliveira، نويسنده , , C.M. and Sembach، نويسنده , , K.R. and Sonneborn، نويسنده , , G. and Vidal-Madjar، نويسنده , , A. and Wood، نويسنده , , B.E.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2002
Pages
4
From page
1169
To page
1172
Abstract
Since HI, OI, and DI have nearly the same ionization potential, the deuterium-to-oxygen ratio (D/O) is an important tracer of the D/H ratio and its putative spatial variations. D/O is indeed very sensitive to astration, both because of deuterium destruction and oxygen production.
we present DI, OI, and NI interstellar column density measurements performed with the Far Ultraviolet Spectroscopic Explorer (FUSE) on eight nearby lines of sight. The first results of this survey show that D/O is a better D/H proxy than D/N, and that D/O is constant in the local interstellar medium. The mean value is D/O=3.81(±0.18)×10−2 (1σ). This result supports both D/H and O/H stability in the LISM.
Keywords
cosmology: observations , stars: white dwarfs , ISM: abundances , ISM: clouds , ultraviolet: ISM
Journal title
PLANETARY AND SPACE SCIENCE
Serial Year
2002
Journal title
PLANETARY AND SPACE SCIENCE
Record number
2308933
Link To Document