Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· References in the article
· Citations to the Article (58) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Water Production and Release in Comet C/1995 O1 Hale-Bopp
Authors:
Dello Russo, Neil; Mumma, Michael J.; DiSanti, Michael A.; Magee-Sauer, Karen; Novak, Robert; Rettig, Terrence W.
Affiliation:
AA(Department of Physics, The Catholic University of America, Washington, DC), AB(Laboratory for Extraterrestrial Physics, NASA Goddard Space Flight Center Code 690, Greenbelt, Maryland), AC(Laboratory for Extraterrestrial Physics, NASA Goddard Space Flight Center Code 690.2, Greenbelt, Maryland), AD(), AE(), AF()
Publication:
Icarus, Volume 143, Issue Icarus, pp. 324-337. (Icarus Homepage)
Publication Date:
02/2000
Origin:
ICAR
DOI:
10.1006/icar.1999.6268
Bibliographic Code:
2000Icar..143..324D

Abstract

Water (H2O) was detected in Comet C/1995 O1 Hale-Bopp on 10 dates between UT January 21.8 and May 1.2, 1997, using high-resolution infrared spectroscopy. This is the first study of the heliocentric dependence of water released from a comet using direct detection of H2O itself. Production rates and rotational temperatures were measured, and the derived heliocentric dependence for the water production rate is Q=(8.35+/-0.13)x1030 [Rh(-1.88+/-0.18)] molecules s-1. The spatial distribution of H2O molecules in the coma is consistent with water being released directly from the nucleus within 1.5 AU of the Sun, although release of a small fraction from icy grains cannot be excluded. When our derived water production rates are compared to the production of native carbon monoxide and dust, we obtain a dust to ice mass ratio of 5.1+/-1.2 within a heliocentric distance of 1.5 AU. The abundance of H2O provides a benchmark for the volatile inventory in Hale-Bopp and, when compared to interstellar and nebular material, helps constrain the origin of cometary ices and their processing histories. These production rates derived from the direct detection of H2O provide a sound basis with which water production rates inferred by indirect methods can be compared.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints