Metal enrichment, dust, and star formation in galaxies at high redshifts. II - Lyman-alpha emission from the Z = 2.465 absorber toward Q0836 + 113

Details Metal enrichment, dust, and star formation in galaxies at high redshifts. II - Lyman-alpha emission from the Z = 2.465 absorber toward Q0836 + 113 Metal enrichment, dust, and star formation in galaxies at high redshifts. II - Lyman-alpha emission from the Z = 2.465 absorber toward Q0836 + 113

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...356...23h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 356, June 10, 1990, p. 23-31. Research supported by the Australian Research

Astronomy and Astrophysics

Astrophysics

52

Cosmic Dust, Galaxies, Lyman Alpha Radiation, Metallicity, Quasars, Star Formation, Absorption Spectra, Abundance, Emission Spectra, H Ii Regions, Red Shift, Star Formation Rate

Scientific paper

QSO absorption systems with damped Ly-alpha lines have been suggested as the high-redshift progenitors of present-day galaxies. As part of a survey of element abundances and star formation rates in these systems, long-slit, 1.5 A resolution spectroscopic observations of the z(em) = 2.67 QSO 0836 + 113 were obtained. The detection of a narrow emission line centered in the black core of the damped Ly-alpha absorption line at z(abs) = 2.465 is reported. It is suggested that the Ly-alpha is from star-forming H II regions associated with the z = 2.465 galaxy. The implications of the detection on future observational studies are discussed, emphasizing the need for low detector noise and high S/N for the sky background.

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