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Steps toward a classifier for the Virtual Observatory. I. Classifying the SDSS photometric archive
R. D'Abrusco, A. Staiano, G. Longo +2
Modern photometric multiband digital surveys produce large amounts of data that, in order to be effectively exploited, need automatic tools capable to extract from photometric data…
A kinematically decoupled component in NGC4778
M. Spavone, E. Iodice, G. Longo +1
We present a kinematical and photometrical study of a member, NGC4778, of the nearest (z=0.0137) compact group: Hickson 62. Our analysis reveals that Hickson 62a, also known as NGC…
An X-ray investigation of Hickson 62
S. Sodani, E. De Filippis, M. Paolillo +2
We studied the X-ray properties of the Hickson Compact Group HCG62, in order to determine the properties and dynamic and evolutionary state of its hot gaseous halo. Our analysis re…
X-ray Emission from Early-Type Galaxies in Groups and Poor Clusters
M. Paolillo
We present the study of three bright Early-Type galaxies hosted in groups or poor clusters: NGC 1399, NGC 1404 and NGC 507. We used ROSAT HRI, PSPC and, when available, higher reso…
Deep ROSAT-HRI observation of the elliptical galaxy NGC 1399
M. Paolillo, G. Fabbiano, G. Peres +1
We present the preliminary results of a deep (167 ks) ROSAT HRI observation of the cD galaxy NGC1399 in the Fornax cluster. We find, in agreement with previous observations, an ext…
An automatic procedure to extract galaxy clusters from CRoNaRio catalogs
E. Puddu, S. Andreon, G. Longo +6
We present preliminary results of a simple peak finding algorithm applied to catalogues of galaxies, extracted from the Second Palomar Sky Survey in the framework of the CRoNaRio p…