Atmospheric entry of sub-millimetre-sized grains into Mars atmosphere: white soft mineral micrometeoroids

IF 1.7 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

International Journal of Astrobiology Pub Date : 2022-06-01 DOI:10.1017/S1473550422000155

G. Micca Longo, S. Longo

引用次数: 1

Abstract

Abstract In this work, we study the passage through the Martian atmosphere of micrometeorites with a white soft mineral (WSM) composition, which have been proposed as transporters of organic molecules in the solar system. The atmospheric entry model includes the dynamics of the atmospheric entry and the physico-chemical aspects of the thermal decomposition process. The results show that, due to the reduced entry speed, Mars may have been a promising collector of matter in this form. In particular, the chemical decomposition process is much more effective than in the case of the Earth's atmosphere in maintaining a moderate temperature of the micrometeorite during most of the entry process.

查看原文本刊更多论文

亚毫米大小的颗粒进入火星大气层：白色软矿物微流星体

摘要在这项工作中，我们研究了具有白色软矿物（WSM）成分的微流星体穿过火星大气层的过程，这些微流星体被认为是太阳系中有机分子的转运体。大气进入模型包括大气进入的动力学和热分解过程的物理化学方面。结果表明，由于进入速度的降低，火星可能是一个很有前途的这种形式物质的收集器。特别是，在进入过程的大部分时间里，化学分解过程比地球大气层的情况更有效，可以保持微流星体的中温。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Astrobiology 地学天文-地球科学综合

CiteScore

3.70

自引率

11.80%

发文量

审稿时长

>12 weeks

期刊介绍： International Journal of Astrobiology is the peer-reviewed forum for practitioners in this exciting interdisciplinary field. Coverage includes cosmic prebiotic chemistry, planetary evolution, the search for planetary systems and habitable zones, extremophile biology and experimental simulation of extraterrestrial environments, Mars as an abode of life, life detection in our solar system and beyond, the search for extraterrestrial intelligence, the history of the science of astrobiology, as well as societal and educational aspects of astrobiology. Occasionally an issue of the journal is devoted to the keynote plenary research papers from an international meeting. A notable feature of the journal is the global distribution of its authors.