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  1. Article

    Jets And Arcs In The Coma Of Comet Hale-Bopp From August 1996 To April 1997

    An observation program for measuring the activity of Comet Hale-Bopp was conducted at the Observatoire de Haute Provence from August 1996 to April 1997. Narrow band images were obtained from the 120 cm telesco...

    CÉLINE LAFFONT, P. ROUSSELOT, J. CLAIREMIDI, G. MOREELS… in Earth, Moon, and Planets (1997)

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    Chapter and Conference Paper

    Spectroscopic Evidence of Organic Molecules Released by the Dust of Halley’s Inner Coma

    New spectroscopic arguments supporting the probable presence of organic molecules in the material released by comet Halley are deduced from the data obtained by the Vega three-channel spectrometer. Two excesse...

    J. Clairemidi, P. Rousselot, G. Moreels in Origin and Evolution of Interplanetary Dust (1991)

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    Chapter and Conference Paper

    Spatial Distribution and Color of Dust in Halley’s Inner Coma

    Composite images of the intensity of solar radiation scattered by dust in Halley’s coma are constructed by using the three-channel spectra obtained during the approach phase of the Vega 2 spacecraft They cover...

    J. Clairemidi, E. Brandon, P. Rousselot… in Origin and Evolution of Interplanetary Dust (1991)