Spectroscopy of the CO J=1-0 and J=2-1 Transitions in Comet P/Schwassmann-Wachmann 1

Details Spectroscopy of the CO J=1-0 and J=2-1 Transitions in Comet P/Schwassmann-Wachmann 1 Spectroscopy of the CO J=1-0 and J=2-1 Transitions in Comet P/Schwassmann-Wachmann 1

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...186.3301g&link_type=abstract

American Astronomical Society, 186th AAS Meeting, #33.01; Bulletin of the American Astronomical Society, Vol. 27, p.857

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Millimeter-wavelength spectra of the J=1-0 and J=2-1 transitions of CO in P/Schwassmann-Wachmann 1 (P/SW1) were obtained with the NRAO 12-m telescope during 1994 December 26 - 29. Both lines were detected with line intensities of T_R(*) ~ 0.09K (J=1-0) and T_R(*) ~ 0.11 K (J=2-1) and linewidths of Delta v_{1/2} ~ 0.25 km s(-1) . The CO J=1-0 line was searched for on 1995 April 8 using the NRAO 12-m telescope, but not detected down to T_R(*) ~ 0.04K, suggesting that the CO production rate may vary significantly over a few months. Column densities and abundances of CO were computed using rotational temperatures calculated from the data and will be presented. The derived column densities and abundances of CO will be compared with published studies of CO(+) in P/SW1 and CO in other comets. Implications for comet-forming environments also will be discussed.

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