A high-resolution spectroscopic study of Q0119-046 and the nature of absorption complexes with z/abs/ greater than z/em/

Details A high-resolution spectroscopic study of Q0119-046 and the nature of absorption complexes with z/abs/ greater than z/em/ A high-resolution spectroscopic study of Q0119-046 and the nature of absorption complexes with z/abs/ greater than z/em/

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...252...54s&link_type=abstract

Astrophysical Journal, Part 1, vol. 252, Jan. 1, 1982, p. 54-68. Research supported by the Science Research Council of England

Astronomy and Astrophysics

Astrophysics

59

Absorption Spectra, Galactic Clusters, Line Spectra, Quasars, Red Shift, Spectral Resolution, Emission Spectra, Fine Structure, High Resolution, Spectrum Analysis

Scientific paper

In addition to finding 61 absorption lines in the QSO Q0119 through high-resolution spectroscopic observations over the wavelength range from 3260 to 4920 A, seven main absorption line redshifts ranging from 0.6577 to 1.9751 are determined. A complex of three main systems whose absolute redshift is greater than the emission redshift is found, with infall velocities relative to the QSO ranging from -2780 to 3870 km/sec. The strongest absorption system of the complex shows C II 1334 A and excited fine structure C II 1335 A lines, implying a gas density greater than 100/cu cm. The best of the possible explanations for such complexes is that they arise from a cluster of galaxies, which is perhaps collapsing, and of which the QSO is a member. The high-velocity filaments in NGC 1275 may be similar to the clouds responsible for the redshift systems discussed.

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