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Spatial structure in lines in the 3398-3526 A region at the extreme limb - Observation, identification and interpretationSpectrograms of high spatial and spectral resolution have been obtained of the extreme solar limb, using the vacuum tower telescope of Sacramento Peak Observatory. Emission lines in the range 3398-3526 A have been identified and classified according to intensity, spatial structure (intensity variation), and profile. Some lines show spatial intensity variation; others do not. It is shown that this effect is related to the abundance of the element responsible for the line and the mean lower-level excitation potential of interlocked lines. This effect is explained in terms of radiative interlocking with other lines, as well as the characteristic size of the volume contributing to the mean intensity.
Document ID
19790031797
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Canfield, R. C.
(California, University La Jolla, Calif., United States)
Pasachoff, J. M.
(Hopkins Observatory Williamstown, Mass., United States)
Stencel, R. E.
(NASA Johnson Space Center Houston, Tex., United States)
Beckers, J. M.
(Sacramento Peak Observatory Sunspot, N. Mex., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1978
Publication Information
Publication: Solar Physics
Volume: 58
Subject Category
Solar Physics
Accession Number
79A15810
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-76-3071
Distribution Limits
Public
Copyright
Other

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