SIMBAD references

2006ApJ...648L.115C - Astrophys. J., 648, L115-L118 (2006/September-2)

CGCG 480-022: a distant lonesome merger?

CARRETERO C., VAZDEKIS A., GONZALEZ-GARCIA A.C., BECKMAN J.E. and QUILIS V.

Abstract (from CDS):

We present a complete analysis, which includes morphology, kinematics, stellar populations, and N-body simulations, of CGCG 480-022, the most distant (cz=14,317 km/s) isolated galaxy studied so far in such detail. The results all support the hypothesis that this galaxy has suffered a major merger event with a companion of ∼0.1 times its mass. Morphology reveals the presence of a circumnuclear ring and possibly further ring debris. The radial velocity curve looks symmetrical, while the velocity dispersion increases with radius, reaching values that do not correspond to a virialized system. Moreover, this galaxy deviates significantly from the fundamental plane and the Faber-Jackson relation. The stellar population analysis show that the ring is younger and more metal-rich, which suggest that it has undergone a fairly recent burst of star formation. Both morphological and dynamical results are in broad agreement with our N-body simulations.

Abstract Copyright:

Journal keyword(s): Galaxies: Abundances - galaxies: individual (CGCG 480-022) - Galaxies: Interactions - Galaxies: Kinematics and Dynamics - Galaxies: Structure - Methods: {em n}-Body Simulations

Simbad objects: 3

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