Chemical Composition of the Early Universe | Zendy

Martin Harwit | Zendy; M. Spaans | Zendy

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Chemical Composition of the Early Universe

Author(s) -

Martin Harwit,

M. Spaans

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/374415

Subject(s) - galaxy , astrophysics , stars , physics , astronomy , redshift , quasar , population , epoch (astronomy) , galaxy formation and evolution , cosmology , universe , lithium (medication) , medicine , demography , sociology , endocrinology

A prediction of standard inflationary cosmology is that the elementalcomposition of the medium out of which the earliest stars and galaxiescondensed consisted primarily of hydrogen and helium 4He with small admixturesof deuterium, lithium 7Li, and 3He. The most red-shifted quasars, galaxies, andLy-alpha absorbers currently observed, however, all exhibit at least someadmixture of heavier elements, as do the most ancient stars in the Galaxy. Herewe examine ways in which the abundance of these same elements, if presentbefore the epoch of population III formation, might be observationallyestablished or ruled out.Comment: Accepted by the Astrophysical Journa

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