Molecular abundances in comet 103P/Hartley 2 observed with the Arizona Radio Observatory

Details Molecular abundances in comet 103P/Hartley 2 observed with the Arizona Radio Observatory Molecular abundances in comet 103P/Hartley 2 observed with the Arizona Radio Observatory

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1283d&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1283

Computer Science

Scientific paper

Comet 103P/Hartley 2 passed perihelion on October 28, 2010 at a close distance of only 0.12 AU from Earth. 103P/Hartley 2 has orbit characteristics of a Jupiter-family comet with an orbital period of 6.5 years and small eccentricity. On November 4, 2010 NASA's EPOXI mission made a close approach to the comet (A'Hearn M. F., et al. 2011). An observational campaign with Herschel and ground based instrumentation was coordinated during the EPOXI flyby to monitor the comet activity (Meech et al. 2011; Biver et al. 2011). Comet 103P/Hartley 2 was observed with the three instruments onboard Herschel (Pilbratt et al. 2010) in the sub-millimetre and far-infrared domain within the framework of the guaranteed time key project "Water and related chemistry in the Solar System" (Hartogh et al. 2009). We have observed this object in the mm and sub-millimeter ranges with the Arizona Radio Observatory (ARO) 12 Meter and Heinrich Hertz Submillimeter Telescopes (HHSMT) to detect the parent volatiles HCN, CS and CH3OH and complement almost simultaneous Herschel H2O and HDO observations (Hartogh et al. 2011). The close approach to Earth provided a unique opportunity to study the molecular composition in the inner coma and the production rate variability due to the rotation of the nucleus in a Jupiter-family comet.

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