Imaging the Dust Trail and Neckline of 67P/Churyumov-Gerasimenko

Details Imaging the Dust Trail and Neckline of 67P/Churyumov-Gerasimenko Imaging the Dust Trail and Neckline of 67P/Churyumov-Gerasimenko

2006-03-27

arxiv.org/abs/astro-ph/0603720v2

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, to be published in the proceedings book of the conference "Dust in Planetary Systems 2005", Calibration up

Scientific paper

We report on the results of nearly 10 hours of integration of the dust trail and neckline of comet 67P/Churyumov-Gerasimenko (67P henceforth) using the Wide Field Imager at the ESO/MPG 2.2m telescope in La Silla. The data was obtained in April 2004 when the comet was at a heliocentric distance of 4.7 AU outbound. 67P is the target of the Rosetta spacecraft of the European Space Agency. Studying the trail and neckline can contribute to the quantification of mm-sized dust grains released by the comet. We describe the data reduction and derive lower limits for the surface brightness. In the processed image, the angular separation of trail and neckline is resolved. We do not detect a coma of small, recently emitted grains.

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