SIMBAD references

2016A&A...595L...7D - Astronomy and Astrophysics, volume 595, L7-7 (2016/11-1)

ALMA reveals optically thin, highly excited CO gas in the jet-driven winds of the galaxy IC 5063.

DASYRA K.M., COMBES F., OOSTERLOO T., OONK J.B.R., MORGANTI R., SALOME P. and VLAHAKIS N.

Abstract (from CDS):

Using CO (4-3) and (2-1) Atacama Large Millimeter Array (ALMA) data, we prove that the molecular gas in the jet-driven winds of the galaxy IC 5063 is more highly excited than the rest of the molecular gas in the disk of the same galaxy. On average, the CO(4-3)/CO(2-1) flux ratio is 1 for the disk and 5 for the jet accelerated or impacted gas. Spatially-resolved maps reveal that in regions associated with winds, the CO(4-3)/CO(2-1) flux ratio significantly exceeds the upper limit of 4 for optically thick gas. It frequently takes values between 5 and 11, and it occasionally further approaches the upper limit of 16 for optically thin gas. Excitation temperatures of 30-100K are common for the molecules in these regions. If all of the outflowing molecular gas is optically thin, at 30-50K, then its mass is 2x106M. This lower mass limit is an order of magnitude below the mass derived from the CO(2-1) flux in the case of optically thick gas. Molecular winds can thus be less massive, but more easily detectable at high z than they were previously thought to be.

Abstract Copyright: © ESO, 2016

Journal keyword(s): ISM: jets and outflows - ISM: kinematics and dynamics - ISM: molecules - submillimeter: ISM - galaxies: active - galaxies: nuclei

Simbad objects: 4

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2019.10.16-20:13:27

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