On the accretion of Uranus and Neptune

被引：4

作者：

Brunini, A ^{[1
]}

Melita, MD ^{[1
]}

机构：

[1] Univ Nacl La Plata, Astron Observ, La Plata, Buenos Aires, Argentina

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2002年 / 330卷 / 01期

关键词：

accretion; accretion discs; planets and satellites : formation; planets and satellites : individual : Uranus; planets and satellites : individual : Neptune; Solar system : formation;

D O I：

10.1046/j.1365-8711.2002.05104.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we discuss some problems concerning the formation of Uranus and Neptune. We find that the adoption of reduced Hill spheres as the region of close interaction between planetesimals introduces an enhancement of the gravitational cross-sections in previous numerical simulations. We also discuss a way to make possible the formation of Uranus and Neptune on time-scales shorter than the age of the Solar system.

引用

页码：184 / 186

页数：3

共 21 条

[1] CALCULATIONS OF THE ACCRETION AND EVOLUTION OF GIANT PLANETS - THE EFFECTS OF SOLID CORES [J].

BODENHEIMER, P ;

POLLACK, JB .

ICARUS, 1986, 67 (03) :391-408

[2] Numerical simulations of the accretion of Uranus and Neptune [J].

Brunini, A ;

Fernández, JA .

PLANETARY AND SPACE SCIENCE, 1999, 47 (05) :591-605

[3]

Brunini A, 1996, ASTRON ASTROPHYS, V314, P977

[4] SOME DYNAMICAL ASPECTS OF THE ACCRETION OF URANUS AND NEPTUNE - THE EXCHANGE OF ORBITAL ANGULAR-MOMENTUM WITH PLANETESIMALS [J].

FERNANDEZ, JA ;

IP, WH .

ICARUS, 1984, 58 (01) :109-120

[5]

FERNANDEZ JA, 1996, PLANT SPACE SCI, V44, P3431

[6] PLANETARY ACCRETION RATES - ANALYTICAL DERIVATION [J].

GREENBERG, R ;

BOTTKE, WF ;

CARUSI, A ;

VALSECCHI, GB .

ICARUS, 1991, 94 (01) :98-111

[7] N-BODY SIMULATION OF GRAVITATIONAL INTERACTION BETWEEN PLANETESIMALS AND A PROTOPLANET .2. DYNAMIC FRICTION [J].

IDA, S ;

MAKINO, J .

ICARUS, 1992, 98 (01) :28-37

[8] STIRRING AND DYNAMIC FRICTION RATES OF PLANETESIMALS IN THE SOLAR GRAVITATIONAL-FIELD [J].

IDA, S .

ICARUS, 1990, 88 (01) :129-145

[9]

LISSAUER JJ, 1994, NEPTUNE TRITON, P37

[10]

MELITA MD, 1999, P IAU C, V173, P37

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