Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009rmxac..35q.298c&link_type=abstract
XII Latin American IAU Regional Meeting (Eds. G. Magris, G. Bruzual, & L. Carigi) Revista Mexicana de Astronomía y Astrofísica (
Astronomy and Astrophysics
Astronomy
Scientific paper
Surface photometry of nine Magellanic Cloud star clusters is presented. Three star clusters are binaries with double peak in the profiles. Four appear to have a significant fine structure in the observed light profiles in terms of bumps, while the remaining ones are taken as comparison clusters with smooth profiles. A double peak is also observed in NGC 376, K 50 and K 54 but these clusters do not a have a companion. Together with NGC 1810 which has an unusual profile EFF profiles do not describe them. Isophotal maps are complex for them. NGC 376, K 50 and K 54 present apparently triangular outer isophots, while NGC 376, K 50 and NGC 1810 have isophotal gaps that extend to the cluster central parts. In the numerical simulations of cluster encounters by de Oliveira, Bica, & Dottori (2000, MNRAS, 311, 589) similar structures can be seen. We conclude that unusual cluster profiles and isophotal distributions may be related to star cluster mergers.
Bica Eduardo
Bonatto Ch.
Carvalho Leonardo
Saurin T. A.
Schmidt Albrecht
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