Astronomical School’s Report, 2011, Volume 7, Issue 2, Pages 221–224

https://doi.org/10.18372/2411-6602.07.2221
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UDC 523.6

Morphological peculiarities of dust jets in the coma of comet 81P/Wild 2

Churyumov K.I., Kleschonok V.V., Baransky O.R., Ponomarenko V.O.

Kyiv Shevchenko National University, Ukraine

Abstract

The researches of morphological features of the inner coma of comet 81P/Wild 2, based on the observations on 27–28 March 2010 were carried out. Images that were obtained with the help of narrow-band filters in the main cometary emissions have no peculiarities. Two jets were located by means of digital filtering at frames in white light: the south, with the width of 20°, and north, with the width of 80°. The conclusion about the location of the narrow jet near the rotation pole of the nucleus was made from a comparison of the locations of the jets for different dates. A similar pattern of location of jets was observed during the previous comet appearances. This can be evidence long-life active regions on the surface of the cometary nucleus.

Keywords: physical properties of cometary nucleus surface; dust jets

References

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