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Title:
Production of C2H6 and H2O in comet 2002 C1 Ikeya-Zhang on UT 2002 April 13.7 - 13.9
Authors:
dello Russo, Neil; Disanti, Michael A.; Magee-Sauer, Karen; Gibb, Erika; Mumma, Michael J.
Publication:
In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed. Barbara Warmbein. ESA SP-500. Noordwijk, Netherlands: ESA Publications Division, ISBN 92-9092-810-7, 2002, p. 689 - 692
Publication Date:
11/2002
Origin:
ARI
ARI Keywords:
Comets: Ethane, Water
Abstract Copyright:
ESA
Comment:
ISBN: 92-9092-810-7
Bibliographic Code:
2002ESASP.500..689D

Abstract

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.

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