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Ultraviolet observations of Sirius A and Sirius B with HST-GHRS; An interstellar cloud with a possible low deuterium abundance
G. Hebrard, C. Mallouris, R. Ferlet +4
We present new observations of the binary Sirius A / Sirius B performed with HST-GHRS. Two interstellar clouds are detected on this sightline, one of them being identified as the L…
Possible spectral lines from the gaseous Beta Pictoris disk
A. Lecavelier des Etangs, L. M. Hobbs, A. Vidal-Madjar +6
We present the results of exploratory HST observations to detect the emission lines of ions in the Beta Pic disk with the spectrograph slit placed off the star. Possible emission l…
The Local Interstellar Medium
R. Ferlet
Substantial progress in the field of the Local Interstellar Medium has been largely due to recent launches of space missions, mostly in the UV and X-ray domains, but also to ground…
Deuterium abundances
M. Lemoine, J. Audouze, L. Ben Jaffel +10
We discuss the measurements of deuterium abundances in high redshift quasar absorbers, in the solar system and in the interstellar medium. We present new results that indicate spat…
Spatial Variability in the Ratio of Interstellar Atomic Deuterium to Hydrogen. I. Observations toward delta Orionis by the Interstellar Medium Absorption Profile Spectrograph
Edward B. Jenkins, Todd M. Tripp, Przemyslaw R. Wozniak +2
Studies of the abundances of deuterium in different astrophysical sites are of fundamental importance to answering the question about how much deuterium was produced during big ban…