Abstract With the aim of investigating galaxy evolution in nearby galaxy groups, we analyzed the spectral energy distribution of 24 galaxies, members of two groups in the Leo cloud, USGC U268 and USGC U376. We estimated the ages and stellar masses of the galaxies by fitting their total apparent magnitudes from far-ultraviolet to near-infrared with population synthesis models. The comparison of the results for a subsample of galaxies with smooth particle hydrodynamic (SPH) simulations with chemo-photometric implementation, shows that in most cases the estimated stellar masses obtained with the two different approaches are in good agreement. The kinematical and dynamical analysis indicates that USGC U268 is in a pre-virial collapse phase while USGC U376 is likely in a more evolved phase towards virialization.


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    Title :

    Galaxy evolution in groups. USGC U268 and USGC U376 in the Leo cloud


    Contributors:
    Marino, A. (author) / Bianchi, L. (author) / Mazzei, P. (author) / Rampazzo, R. (author) / Galletta, G. (author)

    Published in:

    Advances in Space Research ; 53 , 6 ; 920-927


    Publication date :

    2013-01-01


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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