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The cosmic helium abundanceCosmic helium abundance was studied through the interior structure of young stars, profiles of helium absorption lines in the photospheric spectra of hot young stars, and emission-line spectrum of ionized gas. It is concluded that helium occurred before galaxies were formed. Inconsistencies found in the quasar spectra are briefly mentioned.
Document ID
19720006128
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Searle, L. (Hale Observatories Pasadena, CA, United States)
Date Acquired
August 6, 2013
Publication Date
November 1, 1971
Publication Information
Publication: JPL Proc. of the Conf. on Exptl. Tests of Gravitation Theories
Subject Category
Space Sciences
Accession Number
72N13777
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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IDRelationTitle19720006127Collected WorksProceedings of the Conference on experimental tests of gravitation theoriesN72-13776 04-30Collected Works
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