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Photometry with FORS at the ESO VLT
W. Freudling, M. Romaniello, F. Patat +3
ESO's two FOcal Reducer and low dispersion Spectrographs (FORS) are the primary imaging cameras for the VLT. Since they are not direct-imaging cameras, the accuracy of photometry w…
Stellar Populations in the Magellanic Clouds
Nino Panagia, Guido De Marchi, Martino Romaniello
We present the first results of our study of stellar populations in the Large and Small Magellanic Clouds based on multiband WFPC2 observations of "random" fields taken as part of…
RASS-SDSS Galaxy Cluster Survey. VI. The dependence of the cluster SFR on the cluster global properties
P. Popesso, A. Biviano, M. Romaniello +1
Using a subsample of 79 nearby clusters from the RASS-SDSS galaxy cluster catalogue of Popesso et al. (2005a), we perform a regression analysis between the cluster integrated star…
RASS-SDSS Galaxy Cluster Survey. VII. On the Cluster Mass to Light ratio and the Halo Occupation Distribution
P. Popesso, A. Biviano, H. Böhringer +1
We explore the mass-to-light ratio in galaxy clusters and its relation to the cluster mass. We study the relations among the optical luminosity (), the cluster mass ($M_{20…
RASS-SDSS Galaxy Cluster Survey. V. The X-ray-Underluminous Abell Clusters
P. Popesso, A. Biviano, H. Böhringer +1
In this paper we consider a large sample of optically selected clusters, in order to elucidate the physical reasons for the existence of X-ray underluminous clusters. For this purp…
Chemical abundances in LMC stellar populations I. The Inner disk sample Based on observations collected at the VLT UT2 telescope
L. Pompeia, V. Hill, M. Spite +6
The advent of the new class 8 meters telescopes allows for the first time the detailed study of numerous stars of galaxies other than our own. The Large Magellanic Cloud is one of…