Luis Lomelí-Nuñez, UFRJ
Host: Rosa González-Lópezlira
Stellar populations in nearby galaxies
Stellar
clusters are some of the most visible characteristics in galaxies.
Studies have found that late-galaxies show two distinct populations
of stellar clusters (e.g. Simanton et al. 2015a), an older component
(globular clusters) and another younger one (open clusters). Studying
the different populations of star clusters in galaxies can give us
clues about the evolution and current state of galaxies (Pérez et
al. 2013). In the framework of the hierarchical model of galaxy
formation, the current state of galaxies is preceded by a great
history of interactions and mergers of smaller elements. A
consequence of this model of galaxy formation is a continuous
formation of stars, therefore stellar clusters of all ages in
galaxies
should be observed. The detection and observational studies of
stellar clusters has focused in old clusters (e.g., Zepf & Ashman
1993, Ashman & Zepf 1998, Brodie & Strader 2006 and
references in) and in young clusters
(e.g,
Larsen & Richtler 1999, Bica et al. 2003). Recently, with the
help of the HST, works about a new star clusters class has been done
(e.g., Whitmore et al. 1999 (Antennae), Mayya et al. 2008 (M82),
Santiago-Cortés et al. 2010 (M81) ), which have explored a new class
of stellar clusters: super stellar clusters (SSC). These have
characteristics similar to the globular clusters
(mass,
compactibility, etc.) and being the main candidates of an
evolutionary state previous to the GCs they are essentially
intermediate age clusters. In this seminar we will talk about the
properties of the different stellar clusters.