Plateau de Bure observations of the methanol in 103P/Hartley

Details Plateau de Bure observations of the methanol in 103P/Hartley Plateau de Bure observations of the methanol in 103P/Hartley

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..985b&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.985

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Scientific paper

The comet 103P/Hartley 2 made a close approach to the Earth in October 2010, down to a distance of 0.12 AU. In early November, the Deep Impact spacecraft performed a flyby of the comet, in the framework of its extended mission Epoxi [1]. It has been the target of various observing campaigns at all wavelengths involving ground- and space-based observatories [2]. We present here the results of observations performed with the IRAM Plateau de Bure. We observed the emission of several methanol lines from which we built the methanol rotation diagram and measured the rotational temperature in the coma. The interferometric maps have a spatial resolution of few arcseconds, corresponding to few hundred kilometers. Combined to single dish observations these data allow the measurement of the temperature profile in the coma. In addition, other coma properties can be investigateded from our data set such as the origin of methanol in the coma, the coma structure and its time variability.

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