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Prog. Theor. Phys. Vol. 56 No. 6 (1976) pp. 1756-1771

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The Gas Drag Effect on the Elliptic Motion of a Solid Body in the Primordial Solar Nebula

Isao Adachi, Chushiro Hayashi and Kiyoshi Nakazawa

Department of Physics, Kyoto University, Kyoto 606

(Received May 29, 1976)

Abstract:

The gas drag effect in the primordial solar nebula on the motion of a solid body, ranging from a large planetesimal to a small dust grain, is investigated. For a planetesimal, expressions for the short-term variation of the semi-major axis, the eccentricity and inclination are obtained using a perturbation method and a realistic formula for the gas drag force.
For a small body, an orbit spiralling towards the sun in the equatorial plane of the nebula is investigated and the decay time of the orbital radius is obtained. It is found that the decay time at 1 a.u. is as short as 102 or 103 years for a solid body with mass in the range between 103 g and 108 g.


URL : http://ptp.ipap.jp/link?PTP/56/1756/
DOI : 10.1143/PTP.56.1756

[ Full Text PDF (1195K) ]  [ Buy This Article ]  Citation:

References:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 59 No. 6 (1978) pp. 1834-1851 :
    Statistical Behavior of Planetesimals in the Primitive Solar System
    Yoshitsugu Nakagawa
  2. Progress of Theoretical Physics Vol. 69 No. 4 (1983) pp. 1116-1130 :
    Gravitational Instabilities in a Dust-Gas Layer and Formation of Planetesimals in the Solar Nebula
    Minoru Sekiya
  3. Progress of Theoretical Physics Vol. 74 No. 2 (1985) pp. 272-287 :
    Drag on a Gravitating Sphere Moving through a Gas
    Hidenori Takeda, Takuya Matsuda, Keisuke Sawada and Chushiro Hayashi
  4. Progress of Theoretical Physics Vol. 104 No. 5 (2000) pp. 955-970 :
    Gas Drag on a Rotating Body with Gravity
    Hidenori Takeda and Yoshitsugu Nakagawa
  5. Progress of Theoretical Physics Supplement No.70 (1981) pp. 11-34 :
    Origin of the Solar System
    Kiyoshi Nakazawa and Yoshitsugu Nakagawa
  6. Progress of Theoretical Physics Supplement No.96 (1988) pp. 196-210 :
    Chapter 17. Drag on a Gravitating Body
    Hidenori Takeda
  7. Progress of Theoretical Physics Supplement No.96 (1988) pp. 239-255 :
    Chapter 20. Accumulation Process of Planetesimals to the Planets
    Keiji Ohtsuki and Yoshitsugu Nakagawa

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