CO emission from the Z = 2.14 damped Lyman-alpha system toward 0528-250

Details CO emission from the Z = 2.14 damped Lyman-alpha system toward 0528-250 CO emission from the Z = 2.14 damped Lyman-alpha system toward 0528-250

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...412l..21b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 412, no. 1, p. L21-L24.

Astronomy and Astrophysics

Astronomy

20

Emission Spectra, Galactic Evolution, Lyman Alpha Radiation, Quasars, Stellar Spectra, Carbon Monoxide, Molecular Gases, Red Shift, Sky Surveys (Astronomy)

Scientific paper

We report the detection of CO(J = 3-2) and CO(J = 4-3) emission observed toward the QSO 0528-250 at a redshift corresponding to the z = 2.14 damped Lyman-alpha absorption system previously identified in the optical spectrum of the object. The CO emission lines extend over 1100 km/s and show evidence for kinematic substructure of 100-150 km/s. The total CO luminosity exceeds 2 x 10 exp 8 solar luminosities, and the mass of molecular gas inferred under the assumption that the density, excitation temperature, and heavy-element depletion are similar to Galactic GMCs is approximately 7 x 10 exp 11 solar masses.

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