A search for millimeterwave CO emission in damped Lyman-α systems

Details A search for millimeterwave CO emission in damped Lyman-α systems A search for millimeterwave CO emission in damped Lyman-α systems

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...288l..41w&link_type=abstract

Astronomy and Astrophysics 288L, L41-L44 (1994)

Astronomy and Astrophysics

Astrophysics

24

Galaxies: Quasars: Absorption Lines, Radiolines: Galaxies, Ism

Scientific paper

A sensitive search for millimeterwave CO emision in 8 damped Lyman-α systems, 3 heavy element absorption line systems and one emission line galaxy, at redshifts ranging from 0.5 to 2.8, have yielded upper limits to the amount of molecular gas. The limits still allow relatively high H_2_ masses, but our results show that damped Lyman-α systems are not similar to the hyperluminous infrared galaxies at high redshits found in the IRAS database. One tentative detection of CO emission at z_a_=2.47 remains, but is very uncertain. We are not able to confirm a claimed detection of CO emission at z_a_=2.14 towards Q0528-250.

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