SIMBAD references

2017MNRAS.465.3461Z - Mon. Not. R. Astron. Soc., 465, 3461-3474 (2017/March-1)

Kinematics of the ionized and molecular gas in nearby luminous infrared interacting galaxies.


Abstract (from CDS):

We have observed three luminous infrared galaxy systems which are pairs of interacting galaxies, with the Galaxy Hα Fabry-Perot system mounted on the 4.2 m William Herschel Telescope at the Roque de los Muchachos Observatory, and combined the observations with the Atacama Large Millimeter Array observations of these systems in CO emission to compare the physical properties of the star formation regions and the molecular gas clouds, and specifically the internal kinematics of the star-forming regions. We identified 88 star-forming regions in the Hα emission data cubes, and 27 molecular cloud complexes in the CO emission data cubes. The surface densities of the star formation rate and the molecular gas are significantly higher in these systems than in non-interacting galaxies and the Galaxy, and are closer to the surface densities of the star formation rate and the molecular gas of extreme star-forming galaxies at higher redshifts. The large values of the velocity dispersion also show the enhanced gas surface density. The H II regions are situated on the SFR - σv envelope, and so are also in virial equilibrium. Since the virial parameter decreases with the surface densities of both the star formation rate and the molecular gas, we claim that the clouds presented here are gravitationally dominated rather than being in equilibrium with the external pressure.

Abstract Copyright:

Journal keyword(s): galaxies: interactions - galaxies: ISM - galaxies: kinematics and dynamics - galaxies: starburst - galaxies: star formation - galaxies: star formation

VizieR on-line data: <Available at CDS (J/MNRAS/465/3461): tablehii.dat tablemol.dat list.dat fits/*>

Nomenclature: Table A1: [ZBF2017] arpNNN HII NN (Nos arp236 HII 1-arp236 HII 46, arp298 HII 1-arp298 HII 19), [ZBF2017] ngc1614 HII NN (Nos 1-23). Table A2: [ZBF2017] arpNNN MC NN (Nos arp186 MC 1-arp186 MC12, arp236 MC 1-arp236 MC6, arp298 MC 1-arp298 MC9).

Simbad objects: 122

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