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HST observation of the inner coma of 2060 Chiron

Pasian, F.; Fulle, M.; Gil, A. Ortiz

The analysis of persistent comae of very large and distant comets allows us to infer the poorly known physical properties of dust and icy grains produced beyond Jupiter. Chiron is particularly interesting because Fulle ( Astron. Astrophys.282, 980-988; 1994) has shown that the strong asymmetricity of its coma (West, Astron. Astrophys.241, 635-645 …

Observations of diffuse interstellar bands and of interstellar polarization

Somerville, W. B.

Results are presented from two distinct observational projects, concerning the optical diffuse interstellar bands observed with high-resolution and ultra-high resolution spectroscopy. and UV interstellar polarization observed with the Hubble Space Telescope.