Flux of meteoroid impacts on Mercury

被引：63

作者：

Marchi, S ^{[1
]}

Morbidelli, A

Cremonese, G

机构：

[1] Vicolo Osservatorio 2, Dipartimento Astron, I-35122 Padua, Italy

[2] Observ Cote Azur, F-06003 Nice, France

[3] Astron Observ Padova, INAF, I-35122 Padua, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 431卷 / 03期

关键词：

planets and satellites : individual : Earth; planets and satellites : individual : Mercury; meteors; meteoroids;

D O I：

10.1051/0004-6361:20041800

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this work we present a new estimate of the meteoroid flux on Mercury. The flux has been obtained as a result of material delivery from both the 3: 1 and nu(6) resonances, and calibrated on the basis of the Earth meteoroid flux. Our model does not take into account non-gravitational forces, like the Poynting- Robertson effect, and for this reason it is suitable for bodies having dimension greater than about 1 cm. We also analyse the dependence of the predicted impactor flux on Mercury on meteoroid size. Possible asymmetries of the meteoroid flux over the surface (morning/evening hemispheres) and along the orbit (perihelion/aphelion) are also discussed.

引用

页码：1123 / 1127

页数：5

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