Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.1203k&link_type=abstract
American Astronomical Society, DPS meeting #38, #12.03; Bulletin of the American Astronomical Society, Vol. 38, p.503
Astronomy and Astrophysics
Astronomy
2
Scientific paper
We present quantitative measurements of organic molecules in comet 73P-B/Schwassmann-Wachmann obtained with the 8-m Subaru telescope (+ InfraRed Camera and Spectrograph) at Mauna Kea. We acquired high-dispersion infrared spectra (resolution 10000 in bands L and M) of fragment 'B' of comet 73P on both May 9 and 10 UT. Our observations covered wide wavelength region from 2.8 to 3.6 microns in the L-band. This region has signatures from numerous cometary molecules, including H2O, C2H6, C2H2, CH4, H2CO, CH3OH, HCN, NH3, NH2, and OH. The M-band has signatures from CO and H2O. Clear detections of some volatiles (e.g., H2O, C2H6, C2H2, HCN, and OH) were achieved in our observations. Fragment 'B' was in outburst during our observations, so the mixing ratios determined from our observations probably reflect fresh materials ejected from the nucleus. Spectra, production rates, relative abundances, and rotational temperatures will be presented.
Kawakita Hideyo
Kobayashi Hirotada
Mumma Michael J.
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