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83 papers · 1 filter
Arp 194: Evidence of Tidal Stripping of Gas and Cross-Fueling
P. Marziani, D. Dultzin-Hacyan, M. D'Onofrio +1
We present new imaging and spectroscopic observations of the interacting system Arp 194 (= UGC 06945 = VV 126). The northern component (A194N) is a distorted spiral or ring galaxy…
The thin layer of Warm Ionized Gas: towards a 3-D reconstruction of the spatial distribution of HII regions
Roberta Paladini, Rod Davies, Gianfranco DeZotti
HII regions are known to contribute to the so-called thin layer of the diffuse Warm Ionized Gas. In order to constrain this contribution, we reconstruct the 3-D distribution of the…
The host galaxy - AGN connection at low and high redshift
Renato Falomo
The properties of radio loud active galaxies (radiogalaxies, BL Lac objects and radio loud quasar) at low and high redshift are briefly reviewed and compared. The recently derived…
The black hole mass of low redshift radiogalaxies
D. Bettoni, R. Falomo, G. Fasano +1
We make use of two empirical relations between the black hole mass and the global properties (bulge luminosity and stellar velocity dispersion) of nearby elliptical galaxies, to in…
Determination of Primordial Metallicity and Mixing in the Type IIP Supernova 1993W
E. Baron, Peter E. Nugent, David Branch +3
We present the results of a large grid of synthetic spectra and compare them to early spectroscopic observations of SN 1993W. This supernova was discovered close to its explosion d…
The 3--D ionization structure of NGC 6818: a Planetary Nebula threatened by recombination
S. Benetti, E. Cappellaro, R. Ragazzoni +2
Long-slit NTT+EMMI echellograms of NGC 6818 (the Little Gem) at nine equally spaced position angles, reduced according to the 3-D methodology introduced by Sabbadin et al. (2000a,b…