Discovery of Z of about 1 galaxies causing quasar absorption lines

Details Discovery of Z of about 1 galaxies causing quasar absorption lines Discovery of Z of about 1 galaxies causing quasar absorption lines

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...257..417b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 257, no. 2, p. 417-424.

Astronomy and Astrophysics

Astrophysics

56

Absorption Spectra, Cosmology, Galactic Evolution, Galactic Halos, Line Spectra, Quasars, Astronomical Spectroscopy, Magnesium, Metal Ions, Red Shift

Scientific paper

The first identifications of intervening galaxies responsible for intermediate redshift, z of about 1, MgII absorption line systems in quasar spectra are reported. No strong evolution was found in the MgII absorbing galaxy intrinsic luminosity over the redshift interval 0.4 to 1. There is a greater variety of morphological types at z of about 1 than at about 0.4, and possibly a larger fraction of absorbers at about 1 have a strong forbidden O II emission, of greater than about 50 A. Some of the z of about 1 intervening galaxies have optical properties similar to those of high-redshift radio galaxies, although on a smaller scale. Imaging of quasar fields is illustrated in tabular form.

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