Evidence for Interacting Gas Flows and an Extended Volatile Source Distribution in the Coma of Comet C/1996 B2 (Hyakutake)-Reference-Cited by-同舟云学术

Evidence for Interacting Gas Flows and an Extended Volatile Source Distribution in the Coma of Comet C/1996 B2 (Hyakutake)

Published:1997-08 Issue:5326 Volume:277 Page:676-681
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Harris Walter M.¹²³⁴⁵,Combi Michael R.¹²³⁴⁵,Honeycutt R. Kent¹²³⁴⁵,Mueller Béatrice E. A.¹²³⁴⁵,Scherb Frank¹²³⁴⁵

Affiliation:

1. W. M. Harris, Space Astronomy Laboratory, University of Wisconsin, 1150 University Avenue, Madison, WI 53706, USA.

2. M. R. Combi, Space Physics Research Laboratory, University of Michigan, 2455 Hayward Avenue, Ann Arbor, MI 48109–2143, USA.

3. R. K. Honeycutt, Department of Astronomy, Indiana University, Swain Hall West, Bloomington, IN 47405, USA.

4. B. E. A. Mueller, National Optical Astronomy Observatories, 950 North Cherry Avenue, Tucson, AZ 85719, USA.

5. F. Scherb, Department of Physics, University of Wisconsin, 1150 University Avenue, Madison, WI 53706, USA.

Abstract

Images of comet C/1996 B2 (Hyakutake) taken during its close approach to Earth show differences in the distribution of gas and dust in the inner coma and reveal two arc-shaped molecular resonant emission features. The morphology of these features, as well as the apparent decoupling gas from dust in the inner coma, suggest that an extended region of icy grains surrounds the nucleus of Hyakutake and contributes substantially to the production of volatiles. Model simulations suggest the same conclusion and indicate that the brighter arc is explainable by the presence of a trailing condensation of ice-bearing granules with a rate of volatile production approximately 23 percent of that of the nucleus.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference40 articles.

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5. The WIYN [Wisconsin Indiana Yale NOAO (National Optical Astronomical Observatories)] observatory is a 3.5-m telescope located at the Kitt Peak National Observatory (east longitude = –111°36.0′ latitude 31°57.8′ and altitude of 2120 m). The telescope employs active optical techniques to achieve ground-based seeing as good as 0.4“.

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