@article{e13bddf4957348e480511304023fc7a7,
title = "Water production and release in Comet 153P/Ikeya-Zhang (C/2002 C1): Accurate rotational temperature retrievals from hot-band lines near 2.9-μm",
abstract = "multiple non-resonance fluorescence lines of water (H2O) were detected in Comet 153/P Ikeya-Zhang (2002 C1) 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. Analysis of 2.9-μm water lines enabled accurate determination of rotational temperatures on three dates. The derived H2O rotational temperatures were 138-5+6, 141-9+10, and 94 ± 3 K on UT 2002 March 22.0, March 23.0, and April 13.8, respectively. Water production rates were retrieved from spectral lines measured in nineteen separate grating settings over seven observing periods. The derived heliocentric dependence of the water production rate was Q = (9.2 ± 1.1) × 1028 [Rh(-3.21±0.26)] molecules s-1. The spatial distribution of H2O in the coma was consistent with its release directly from the nucleus (as a native source) on all dates.",
author = "{Dello Russo}, Neil and DiSanti, {Michael A.} and Karen Magee-Sauer and Gibb, {Erika L.} and Mumma, {Michael J.} and Barber, {Robert J.} and Jonathan Tennyson",
note = "Funding Information: This work was supported by the NASA OSS Planetary Atmospheres Program under NAG5-10795 to N. Dello Russo and the Planetary Astronomy Program under RTOP 693-344-32-30-07 to M.J. Mumma. We thank A. Tokunaga and the IRTF staff for accommodating our request for TOO time while the comet was at its brightest and available only during daytime. We also thank D. Griep and L. Bergknut for their expertise allowing us to successfully obtain these data during difficult observing conditions. The NASA IRTF is operated by the University of Hawaii under Cooperative Agreement number NCC 5-538 with the NASA OSS Planetary Astronomy Program. The authors recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. ",
year = "2004",
month = mar,
doi = "10.1016/j.icarus.2003.11.004",
language = "English (US)",
volume = "168",
pages = "186--200",
journal = "Icarus",
issn = "0019-1035",
publisher = "Academic Press Inc.",
number = "1",
}