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Copernicus observations of interstellar matter toward the Orion OB1 association. I - Epsilon and Pi-5 OrionisCopernicus UV data on interstellar lines toward Epsilon Ori and Pi-5 Ori are analyzed to study abundances and physical conditions in both low- and intermediate-velocity components. Clouds at -8 and +5 km/s (LSR) toward Epsilon Ori show typical depletions of Fe, Ti, Mg, and Si in dense (H number density about 100 per cu cm) gas. Low-column-density intermediate-velocity clouds toward both stars, with low densities (hydrogen number density less than 1 per cu cm) and near-cosmic Si abundances, are consistent with a widespread pattern of high-velocity gas over a 15-deg area surrounding the Orion region. Such activity may be attributed to the repeated action of supernovae in a patchy low-density region of interstellar gas.
Document ID
19800026527
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Shull, J. M.
Date Acquired
August 10, 2013
Publication Date
October 1, 1979
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
80A10697
Funding Number(s)
CONTRACT_GRANT: NSF AST-75-23590
CONTRACT_GRANT: NGR-05-003-578
Distribution Limits
Public
Copyright
Other

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