1980/01/01 by W. L. W. Sargent, Patrick Young, A. Boksenberg +1 · 3 citations
Physics and Astronomy · #Stellar, planetary, and galactic studies #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena
paper · doi:10.1086/190644
openalex publication_date 1980/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/14
The large Lyman-alpha samples in five QSOs with z<SUB>em</SUB> between 2.2 and 3.3 are used to test whether the absorbing gas is cosmologically distributed or ejected from the QSOs. It is shown that there is no significant variation in line density with redshift, nor in the rest equivalent width spectrum among the QSOs. In addition, the mean number density of lines in each object is found to be the same, that is, 60 lines per delta z=1 with W greater than or equal to 0.32 A.