Probing the Physics of Interacting Galaxies

Details Probing the Physics of Interacting Galaxies Probing the Physics of Interacting Galaxies

2003-01-23

arxiv.org/abs/astro-ph/0301471v1

Astrophys.Space Sci. 284 (2003) 503-506

Astronomy and Astrophysics

Astrophysics

Euroconference Proceedings: The Evolution of Galaxies III - from simple approaches to self-consistent models, 4 pages, 2 Posts

Scientific paper

10.1023/A:1024060411996

Both Arp 140 and Arp 104 reveal extended tidal tails in the HI. The Halpha and FIR fluxes of Arp 140 yield similar SFR of ~0.8 solar masses per year. In contrast the Halpha flux of Arp 104 yields a SFR of ~0.05 solar masses per year, ~ 20 times smaller than that obtained from the FIR flux. Spectra were used to examine the changing velocity of atomic and molecular gas in NGC 5218 (Arp 104). The atomic and molecular gas were found to be dynamically similar with comparable velocities and velocity widths across the galaxy; consistent with the two phases responding similarly to the interaction, or enhanced HI to CO conversion in the centre of the galaxy.

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