Depleted Carbon Monoxide in Fragment C of the Jupiter-Family Comet 73P/Schwassmann-Wachmann 3

Details Depleted Carbon Monoxide in Fragment C of the Jupiter-Family Comet 73P/Schwassmann-Wachmann 3 Depleted Carbon Monoxide in Fragment C of the Jupiter-Family Comet 73P/Schwassmann-Wachmann 3

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...661l.101d&link_type=abstract

The Astrophysical Journal, Volume 661, Issue 1, pp. L101-L104.

Astronomy and Astrophysics

Astronomy

20

Comets: General, Comets: Individual (73P/Schwassmann-Wachmann 3), Molecular Processes, Solar System: Formation

Scientific paper

Carbon monoxide emission was targeted in fragment C of the recently split Jupiter-family comet 73P/Schwassmann-Wachmann 3 during its 2006 apparition, using the Cryogenic Echelle Spectrograph (CSHELL) at the NASA IRTF on Mauna Kea, Hawaii. Simultaneous sounding with H2O near 4.65 μm revealed highly depleted CO, consistent with a mixing ratio of 0.5% +/- 0.13%. Along with depleted CH3OH but nearly normal HCN, this may indicate that this comet formed in the inner giant planets' region or, alternatively, that it formed relatively late, after significant clearing of the protosolar nebula.

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