Physics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1817l&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1817
Physics
Scientific paper
The comet 103P/Hartley 2, target of the EPOXI mission (NASA) was monitored from July to December 2010. The goal of the campaign was to characterize the comet activity evolution from 1.7 AU to perihelion at 1.06 AU, as well as to follow the evolution of the dust coma morphology during this passage. Longslit spectra and optical broadband images were acquired with the instrument CAFOS mounted at the 2.2. m telescope at Calar Alto Observatory (CSIC-MPG). The evolution of the dust coma morphology from the R Johnson images shows no clear features aside the dust tail. The Af parameter, as a proxy of the dust production rate, measured in a circular aperture of 5000 km radius at the comet distance varies from 13 cm at 1.7 AU to 150 cm at the perihelion. The dust radial or azimuthally averaged profiles versus projected cometocentric distance can be linearly fit in log-log representation. The slope m of these fits ranges from -0.95 to 1.3.
Lara Luisa-Maria
Lin Zheng-Yan
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