Evaluation of the physical parameters of gas in the neutral atmospheres of comets: Method of isophots

A new method of isophots is considered in application to the evaluation of the physical parameters of gas in the neutral atmospheres of comets. It is compared to the method of circular diaphragms. The use of the method of isophots in the photometric observations of comet 2009/P1 (Garradd) has shown...

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Bibliographic Details
Published in:Kinematics and physics of celestial bodies 2015-11, Vol.31 (6), p.276-280
Main Authors: Kravtsov, F. I., Luk’yanyk, I. V.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
Atmosphere
Cometary atmospheres
Comets
Dynamics and Physics of Bodies of the Solar System
Fluid dynamics
Fluid flow
Hydrodynamics
Kinematics
Neutral atmospheres
Observations and Techniques
Photochemistry
Photometry
Physical properties
Physics
Physics and Astronomy
Solar system
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Summary:A new method of isophots is considered in application to the evaluation of the physical parameters of gas in the neutral atmospheres of comets. It is compared to the method of circular diaphragms. The use of the method of isophots in the photometric observations of comet 2009/P1 (Garradd) has shown that it is completely applicable to the retrieving of the hydrodynamic velocity of the gas outflow and the lifetime of molecules in the neutral atmospheres of comets.
ISSN:0884-5913
1934-8401
DOI:10.3103/S0884591315060033