Published July 1, 1975
| Version v1
Journal article
1640.4 A Hα line of He II observed from Skylab
- 1. E. O. Hulburt Center for Space Research, Naval Research Laboratory
Description
Profiles obtained from NRL Skylab solar spectra of the 1640.4 A feature identified as the Hα line of He ii are discussed and compared with theoretical profiles derived assuming (a) collisional excitation and (b) radiative recombination as the dominant excitation mechanism. Relative intensities of this line as a function of altitude above and below the solar white-light limb (from -12'' to +8'') are also given for a representative quiet Sun region and for a polar coronal hole. (auth)
Additional details
Identifiers
- DOI
- 10.1086/181850;
Publishing Information
- Journal Title
- The Astrophysical Journal
- Journal Volume
- 199
- Journal Issue
- 1
- Series
- Astrophys. J., Lett.
- Journal Page Range
- L67
- ISSN
- 0004-637X
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 7226539
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- BALMER LINES; COLLISIONS; EXCITATION; HELIUM IONS; LEVELS; RECOMBINATION; SKYLAB; SOLAR CORONA; SPECTRA; SPECTROSCOPY
- Descriptors DEC
- CHARGED PARTICLES; ENERGY-LEVEL TRANSITIONS; IONS; SATELLITES
Optional Information
- Notes
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