First detection of CO (j = 0 - 1) adsorption at cosmological distances (z = 0.247)

Details First detection of CO (j = 0 - 1) adsorption at cosmological distances (z = 0.247) First detection of CO (j = 0 - 1) adsorption at cosmological distances (z = 0.247)

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...286l...9w&link_type=abstract

Astronomy and Astrophysics 286L, L9-L12 (1994)

Astronomy and Astrophysics

Astronomy

65

Absorption Spectra, Carbon Monoxide, Interstellar Matter, Line Spectra, Molecular Clouds, Molecular Spectra, Radio Astronomy, Spiral Galaxies, Bl Lacertae Objects, Galactic Nuclei, Red Shift

Scientific paper

We report the first detection of CO absorption lines in an intermediate redshift galaxy, at z = 0.24671. The background continuum source is the BL Lac object PKS 1413+135, which is likely to be situated in the nucleus of the spiral galaxy hosting the absorbing clouds. At least three CO(j = 0 - 1) components were detected. The lines are very narrow, down to 0.6 km/s. The filling factor of the absorbing clouds is large. The extent of the continuum source is unknown.

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