NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Observations of the interstellar gas with the Copernicus satelliteResults are reviewed for Copernicus far-UV measurements of the absorption lines of H I, D I, H2, and heavier elements in the interstellar gas. Column densities along several lines of sight, as estimated from Ly-alpha absorption-line profiles, confirm that wide differences in the gas density are present in various directions. The measurement of interstellar D I implies an open universe unless alternate sources for this nuclide are found. Analysis of reddened stars for which the line of sight passes through one or more interstellar clouds indicates a depletion of several heavy elements in the gas. It is suggested that the depleted elements may be present in grains rather than molecules and that the intercloud medium may consist primarily of H II with a few small H I clouds.
Document ID
19750056205
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Morton, D. C.
(Princeton University New Observatory, Princeton, N.J., United States)
Date Acquired
August 8, 2013
Publication Date
July 31, 1975
Subject Category
Astrophysics
Accession Number
75A40277
Funding Number(s)
CONTRACT_GRANT: NAS5-1810
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available