Past and Future of CG J1720-67.8: Constraints from Observations and Models
arXiv:astro-ph/0603508 · doi:10.1007/978-3-540-71173-5_45
Abstract
We discuss the evolution of the peculiar, nearby (z = 0.045), compact galaxy group CG J1720-67.8, by interpreting a large amount of observational information on the basis of our recent results from spectrophotometric evolutionary synthesis models and new N-body/SPH simulations. The group, that is composed of two spiral galaxies with a mass ratio approximately 4:1 and an S0 galaxy in a particularly compact configuration, is undergoing an active pre-merging phase. Several tidal features are signposts of the complex dynamics of the system. We suggest that the observed structure of the tidal features can be explained only if all three galaxies are involved in a strong interaction process.
5 pages, 3 (degraded) figures. Proc. ESO Workshop "Groups of galaxies in the nearby Universe", Santiago, Chile, 5-9 Dec. 2005, ESO Astrophysics Symposia, eds. I. Saviane, V. Ivanov & J. Borissova, Springer-Verlag
References in corpus (5)
- The cosmological simulation code GADGET-2
- Star formation rates and mass distributions in interacting galaxies
- The Compact Group of Galaxies HCG 31 is in an early phase of merging
- Interpreting the galaxy group CG J1720-67.8 through evolutionary synthesis models
- Dynamics and star formation activity of CG J1720-67.8 unveiled through integral field spectroscopy and radio observations