Determination of physical parameters of the gas in neutral atmospheres of comets. Methods of isophots

1Kravtsov, FI, 1Luk'yanyk, IV
1Astronomical Observatory of Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Kinemat. fiz. nebesnyh tel (Online) 2015, 31(6):16-22
Start Page: Dynamics and Physics of Solar System Bodies
Language: Russian

New method of isophots to determine the physical parameters of the gas in neutral atmospheres of comets is proposed in the paper. A comparison with the method of circular apertures is made. Application of isophots method to photometric observations of comet 2009/P1 (Garradd) showed that this method is suitable for determination of the hydrodynamic velocity of gas outflow and the lifetime of the molecules in the neutral atmospheres of comets.

Keywords: atmosphere of the planets, physical parameters of gas

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