Optical monitoring of the coma of comet 103P/Hartley 2

Details Optical monitoring of the coma of comet 103P/Hartley 2 Optical monitoring of the coma of comet 103P/Hartley 2

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1523w&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1523

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of coma monitoring of comet 103P/Hartley 2 at the epoch of the EPOXI encounter. The images were obtained using the 2 m telescope of the Bulgarian National Astronomical Observatory at Rozhen, in the bands of CN, C3, C2, and dust. All the three radicals formed very similar transient features which expanded outwards. Evolution of the CN structures was used to determine the sky-projected expansion velocities. Photometry of the CN coma shows strong variability, which we consider as caused by the nucleus rotation. The repeatability of the coma pattern was not perfect, which agrees with the suggested excitation of the rotation state.

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