Bibcode
Lourenso, S.; Aguerri, J. A. L.; Vazdekis, A.; Beckman, J. E.; Peletier, R. F.
Referencia bibliográfica
Astrophysics and Space Science, v. 284, Issue 2, p. 925-928 (2003).
Fecha de publicación:
4
2003
Revista
Número de citas
1
Número de citas referidas
1
Descripción
High spatial resolution visible and NIR observations of the bar of NGC
5850, a prototype of double barred spirals, together with visible
intermediate and high dispersion spectra along the primary bar, are
being used, with the aid of simple stellar population synthesis models,
to investigate the mean age and metallicity of the different stellar
components of the central part of the galaxy. The determination of
stellar ages and metallicities would constrain theoretical scenarios for
secondary bar formation and the evolution of barred spirals.
Unfortunately, we cannot obtain a good fit with simple stellar
populations (SSPs) to the spectral indices, so it can not give us, by
now, insight into the mean stellar age and metallicity of the real
populations in the central region of the galaxy. These preliminary
results show a relatively old primary bar with metallicity about solar,
although absolute values must be taken with care. The nucleus has a
young stellar component, and is very dusty.