INVESTIGADORES
CELLONE Sergio Aldo
congresos y reuniones científicas
Título:
Estructura de disco en galaxias elípticas "enanas: evidencias fotométricas
Autor/es:
CELLONE, S. A.; BUZZONI, A.
Lugar:
La Plata
Reunión:
Congreso; 46a. Reunión Anual de la AAA; 2003
Institución organizadora:
AAA
Resumen:
We present evidences for the presence of disk structure in faint galaxies (MB ≤ -15) in the NGC 5044 Group, which were originally classified as dwarf ellipticals (dE). These evidences, obtained from multicolour surface photometry, are:
External isophotes with a "warped disk" morphology.
Surface brightness profiles with a two component (bulge + disk) structure.
Situation of the galaxies in a surface-brightness vs. magnitude plot.
Situation of the galaxies in a colour - magnitude plot.
These indicators are not simultaneously present in every object, hence it is probable that dwarf "elliptical" galaxies with disk structure are an heterogeneous set. In some of these objects, the presence of a disk component is evident both from their morphology and from their stellar populations. "Disky" dEs seem to show a more extended projected spatial distribution on the Group field than the rest of the dEs.
