Common Lyman-alpha absorption lines in the triple QSO PG 1115+08

Details Common Lyman-alpha absorption lines in the triple QSO PG 1115+08 Common Lyman-alpha absorption lines in the triple QSO PG 1115+08

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...272l...1w&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 272, Sept. 1, 1983, p. L1-L4.

Astronomy and Astrophysics

Astrophysics

43

Interstellar Matter, Lyman Alpha Radiation, Quasars, Absorption Spectra, Lyman Spectra, Spectrum Analysis, Ultraviolet Spectra

Scientific paper

Spectroscopic observations at a resolution of 1 A have been obtained of the bright (A) and one of the faint (C) components of the triple QSO PG 1115+08 shortward of the Lyman-alpha emission line down to approximately 3200 A. Two of the Lyman-alpha lines not associated with metal-containing absorption systems are clearly present in the spectra of both objects. A lower limit of approximately 0.4 kpc for the lateral dimensions of one of these Ly-alpha clouds follows if the lens system has a redshift of approximately 0.8.

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