Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-01-21
Astronomy and Astrophysics
Astrophysics
Accepted by ApJ Letters on Jan. 21, 1999. 7 pages including 3 figures
Scientific paper
10.1086/311940
We report the detection of CO(3-2) emission from the submillimeter-selected luminous galaxy SMM J14011+0252. The optical counterpart of the submillimeter source has been identified as a merger system with spectral characteristics consistent with a starburst at z=2.565. The CO emission confirms the optical identification of the submillimeter source and implies a molecular gas mass of 5x10^{10}h_{75}^{-2} M(sun), after correcting for a lensing amplification factor of 2.75. The large molecular gas mass and the radio emission are consistent with the starburst interpretation of the source. These results are similar to those found for SMM J02399-0136, which was the first submillimeter selected CO source found at high redshift. The CO detections of these two high-redshift submillimeter galaxies suggest the presence of massive reservoirs of molecular gas which is consistent with the inferred high rates of star-formation (1000 M(sun)/yr). These two systems appear to be associated with merger events which may evolve into present day luminous elliptical galaxies.
Barger Amy. J.
Blain Andrew W.
Evans Aaron S.
Frayer Dave T.
Ivison Rob J.
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