Detection of a primitive hydrogen cloud

Details Detection of a primitive hydrogen cloud Detection of a primitive hydrogen cloud

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983cha%26a...7..303b&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 7, Issue 4, p. 303-304.

Astronomy and Astrophysics

Astrophysics

Scientific paper

The authors' identification of absorption systems in the quasar OQ 172 has reliably determined one such at z = 3.3528 supported by the hydrogen lines Lα - Lɛ. Analysis shows it to be a primitive hydrogen cloud formed after the big bang. Assuming no broadening due to damping, they found a Doppler width b = 55 km/s and a column density lg NH = 14.66 from the curve of growth.

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