Bibcode
Trancho, Gelys; Miller, Bryan; García-Lorenzo, Begoña; Sánchez, Sebastián F.
Referencia bibliográfica
New Astronomy Reviews, Volume 49, Issue 10-12, p. 613-617.
Fecha de publicación:
1
2006
Revista
Número de citas
1
Número de citas referidas
1
Descripción
Studies of globular cluster systems play a critical role in our
understanding of galaxy formation. Imaging with the Hubble Space
Telescope has revealed that young star clusters are formed copiously in
galaxy mergers, strengthening theories in which giant elliptical
galaxies are formed by the merger of spirals [e.g. Whitmore, B.C.,
Schweizer, F., Leitherer, C., Borne, K., Robert, C., 1993. Astronomical
Journal. 106, 1354; Miller, B.W., Whitmore, B.C., Schweizer, F., Fall,
S.M., 1997. Astronomical Journal. 114, 2381; Zepf, S.E., Ashman, K.M.,
English, J., Freeman, K.C., Sharples, R.M., 1999. Astronomical Journal.
118, 752; Ashman, K.M., Zepf, S.E., 1992. Astrophysical Journal. 384,
50]. However, the formation and evolution of globular cluster systems is
still not well understood. Ages and metallicities of the clusters are
uncertain either because of degeneracy in the broad-band colors or due
to variable reddening. Also, the luminosity function of the young
clusters, which depends critically on the metallicities and ages of the
clusters, appears to be single power-laws while the luminosity function
of old clusters has a well-defined break. Either there is significant
dynamical evolution of the cluster systems or metallicity affects the
mass function of forming clusters. Spectroscopy of these clusters are
needed to improve the metallicity and age measurements and to study the
kinematics of young cluster systems. Therefore, we have obtained GMOS
IFU data of 4 clusters in NGC1275. We will present preliminary results
like metallicities, ages, and velocities of the star clusters from IFU
spectroscopy.