Bibcode
Kuntschner, H.; Emsellem, E.; Bacon, R.; Bureau, M.; Cappellari, M.; Davies, R. L.; de Zeeuw, P. T.; Falcón-Barroso, J.; Krajnović, D.; McDermid, R. M.; Peletier, R. F.; Sarzi, M.
Referencia bibliográfica
Science Perspectives for 3D Spectroscopy, Eso Astrophysics Symposia European Southern Observatory. ISBN 978-3-540-73490-1. Springer-Verlag Berlin Heidelberg, 2007, p. 123
Fecha de publicación:
0
2007
Número de citas
0
Número de citas referidas
0
Descripción
We present selected results from integral-field spectroscopy of 48
earlytype galaxies observed as part of the SAURON survey. Maps of the
Hβ Fe5015, Mgb and Fe5270 indices in the Lick/IDS system were
derived for each of the survey galaxies. The metal line strength maps
show generally negative gradients with increasing radius roughly
consistent with the morphology of the light profiles. Remarkable
deviations from this general trend exist, particularly the Mg b isoindex
contours appear to be flatter than the isophotes of the surface
brightness for about 40% of our galaxies without significant dust
features. Generally these galaxies exhibit significant rotation. We
infer from this that the fast-rotating component features a higher
metallicity and/or an increased Mg/Fe ratio, as compared to the galaxy
as a whole.