Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998larm.confe.156c&link_type=abstract
"IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 199
Astronomy and Astrophysics
Astronomy
Scientific paper
The study of the extended emission-line regions of 26 weak radio galaxies is presented. Emission is detected in all galaxies and extended regions are resolved in 81%, with mean sizes of 4.6 kpc. Morphologies are predominantly oval or elliptical with a central condensation of kpc in size and in some cases there are filamentary structures at several kpc from the nucleus. Just in B2 1346+26 two lobules are detected that spatially coincide with those observed in radio frequencies, in the remaining sources the EELR is associated to the radio core. The estimated luminosities, density and mass of gas of the weak radio galaxies are similar to those of powerful ones. It is proposed that also in weak radio galaxies the central source is responsible of the gas ionization and that the observed gas has been acquired by fusion or interaction of galaxies, with at least one rich in gas.
Carrillo Rene
Cruz-Gonzalez Irene
Guichard José
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