INVESTIGADORES
SMITH CASTELLI Analia Viviana
congresos y reuniones científicas
Título:
The population of galaxies in the central region of the Antlia Cluster
Autor/es:
SMITH CASTELLI A. V.; BASSINO L. P.; CELLONE S. A.; RICHTLER T.; DIRSCH B.; INFANTE L.; ARUTA C.; GÓMEZ M.
Lugar:
Capilla del Monte
Reunión:
Congreso; 49 Reunión de la Asociación Argentina de Astronomía; 2006
Institución organizadora:
Asociación Argentina de Astronomía
Resumen:
We present results of the study of the galaxy population in the central region of the Antlia cluster. Our work is based on Washington photometric observations obtained with the MOSAIC camera of the 4-m Blanco telescope (CTIO), as well as on spectra taken with the IMACS camera at the Magellan I Baade 6.5-m telescope (Las Campanas Observatory). Our main result is that early-type dwarf galaxies that are confirmed or likely members of Antlia define a very narrow relation in the colour-magnitude diagram (CMD). Since in this diagram, the location of different types of galaxies is also tightly related to their membership status, we obtained as an additional result that the CMD can be used to identify background galaxies, which are a significant source of contamination.
