Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...394...81s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 394, no. 1, July 20, 1992, p. 81-86. Research supported by NSF.
Astronomy and Astrophysics
Astrophysics
15
Absorption Spectra, Galactic Structure, Magnesium, Quasars, Astronomical Photometry, Astronomical Spectroscopy, Charge Coupled Devices, Faint Objects, Galactic Clusters, Red Shift
Scientific paper
Imaging and spectroscopic observations of the field of the QSO 3C 336 (z = 0.927), whose absorption spectrum exhibits at least three Mg II 2796, 2803-A absorption systems with zabs less than zem, making it the richest low-redshift absorption spectrum observed in a recently completed absorption line survey. The most intrinsically faint Mg II absorbing galaxy yet discovered is tentatively identified. With z equal to 0.472 and B greater than 24, its properties strongly resemble those of the so-called faint blue galaxies found in deep imaging and spectroscopic surveys for field galaxies. The implications of this very complex field for the general properties of galaxies producing heavy element absorption systems in the spectra of QSOs are discussed.
Dickinson Mark
Steidel Charles C.
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