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IRAS F10214 + 4724 - an extended CO emission source at Z = 2.2867
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1992
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Using the IRAM 30 m telescope, we observed CO(J = 3-2) and CO(J = 4-3) emission lines at z = 2.2867 from the gas-rich protogalaxy IRAS F10214+4724. We estimate the molecular mass to be 3 x 10^11^ h^-2^< MJ(H_2_)/M_sun_ <3 x 10^12^ h^-2^ and the gas-to-dust mass ratio as 1500 < M(H_2_)/M_d_ < 15,000. A comparison of the CO(3-2) line observations from the 30 m and 12 m telescopes suggests that the CO is clumped, with the clumps distributed spatially over tens of arcseconds; no more than half the CO emission is spatially coincident with the galaxy IRAS F10214+4724 itself. This conclusion is in keeping with recent interferometric observations of CO(3-2) in IRAS F10214+4724.