Spatial distribution of the Halley comet dust continuum from data of TKS - VEGA 2

Details Spatial distribution of the Halley comet dust continuum from data of TKS - VEGA 2 Spatial distribution of the Halley comet dust continuum from data of TKS - VEGA 2

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..769m&link_type=abstract

In: Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 J

Astronomy and Astrophysics

Astronomy

Comets, Dust

Scientific paper

Spatial distribution of the solar light scattered by dust particles in Halley comet coma towards the Sun and in the near tail is investigated using spectra measured by TKS VEGA 2. Monochromatic composed images in 5260Å are constructed from consequently registered two-dimensional images for 9 and 10 March1986. Radial profiles presenting the intensity as a function of the projected distance to the nucleus p are also used in the research. Two strong jets are observed. One of them is in direction towards the Sun and expands up to p= 19500 km from the nucleus and the other is perpendicular to it and reaches p=19000 km The weaker slope of the radial profile near the nucleus is explained by the greater optical depth of the inner coma or by the quick change of the scattering angle. In antisolar direction in the near tail a weaker intensity of the dust continuum is observed. The intensity increasing obtained far from the nucleus and the radial profile maxima are probably connected with a dust shells formation due to jet activity and nucleus rotation.

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