Differential evolution of Lyman alpha lines

Details Differential evolution of Lyman alpha lines Differential evolution of Lyman alpha lines

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993japa...14...97a&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 14, no. 2, p. 97-102.

Astronomy and Astrophysics

Astrophysics

5

Galactic Evolution, Lyman Alpha Radiation, Quasars, Absorption Spectra, Red Shift, Spectral Line Width

Scientific paper

We have analyzed a large, homogeneous sample of Lyman alpha lines, observed at intermediate resolution, using the maximum likelihood method. The analysis shows that the evolutionary index gamma, is a function of rest equivalent width with stronger lines evolving faster. The mean equivalent width increases with redshift. This behavior is similar to that exhibited by the heavy element absorption lines in the quasar spectra.

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