... Bologna

Formerly Istituto TeSRE - CNR.

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... (APM

http://www.ast.cam.ac.uk/~apmcat/

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... Archive

Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Institute. STScI is operated by the association of Universities for Research in Astronomy, Inc. under the NASA contract NAS 5-26555.

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... observations

Based on observations made with ESO Telescopes at the Paranal Observatory under programme ID  269.D-5014.

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