Bibcode
del Burgo, C.; Peletier, R. F.; Vazdekis, A.; Arribas, S.; Mediavilla, E.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 321, Issue 2, pp. 227-238.
Fecha de publicación:
2
2001
Número de citas
30
Número de citas referidas
27
Descripción
We present integral field spectroscopy of the
9×12arcsec2 circumnuclear region of M32 obtained with
the 2D_FIS fibre optics spectrographs installed at the 4.2-m William
Herschel Telescope. From these spectra line-strength maps have been made
for about 20 absorption lines, mostly belonging to the Lick system. We
find good agreement with long-slit line-strength profiles in the
literature, and no radial gradients in the azimuthally averaged
absorption line indices. We fit the mean values of each spectral index
and colours from the literature for the inner regions of M32 to the
models of Vazdekis et al. and Worthey, finding that the present data can
be well interpreted for a single stellar population of an intermediate
age (~4Gyr) and a metallicity similar to solar (Z=0.02).