Production of C2H6 and H2O in comet 2002 C1 Ikeya-Zhang on UT 2002 April 13.7-13.9

Neil Dello Russo, Michael A. DiSanti, Karen Magee-Sauer, Erika Gibb, Michael J. Mumma

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Ethane (C2H6) and water (H2O) were detected in comet 2002 C1 Ikeya-Zhang on seven dates post-perihelion between UT 2002 March 21.9 (Rh = 0.51 AU) and April 13.9 (Rh = 0.78 AU), using the Cryogenic Echelle Spectrometer (CSHELL) at the NASA Infrared Telescope Facility. Our long-slit spectra featured both high spectral dispersion and high spatial resolution about the nucleus, permitting the extraction of rotational temperatures (for H2O), production rates, and spatial information along the slit. Here we present results for H2O and C2H6 on one date (April 13.7-13.9). Average production rates on this date are Q(H2O) = (2.1 ± 0.3) × 1029 molecules s-1, and Q(C2H6) = (1.3 ± 0.2) × 1027 molecules s-1, giving a mixing ratio of C2H6 / H2O = (6.2 ± 1.3) × 10-3.

Original languageEnglish (US)
Pages (from-to)689-692
Number of pages4
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number500
StatePublished - Jul 2002

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science


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