Based on observations made with the NASA/ESA Hubble Space Telescope, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with proposal #9230.

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Visiting Astronomer, Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation.

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... CCD imager

http://www.ctio.noao.edu/cfccd/cfccd.html

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... Spectrograph

http://www.ctio.noao.edu/spectrographs/60spec/manual/

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...2004)

ftp://cdsarc.u-strasbg.fr/cgi-bin/VizieR, catalogue I/289.

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...1995)

ftp://cdsarc.u-strasbg.fr/cgi-bin/VizieR, catalogue VI/64.

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