Items where Author is "Ciardullo, R."

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Article

Astronometry with the Hubble Space Telescope : trigonometric parallaxes of planetary nebula nuclei NGC 6853, NGC 7293, Abell 31 and DeHt 5. (2009) G.F. Benedict, B.E. McArthur, R. Napiwotzki, T.E. Harrison, H.C. Harris, E. Nelan, H.E. Bond, R.J. Patterson and R. Ciardullo