木星の大気中のヘリウム質量分子は,木星の大気中のヘリウム質量分数です
1Institut für Atmosphärenphysik an der Universität Rostock, Kühlungsborn, Germany.
まとめ
NASA NASA NASA NASAは,アメリカ合衆国の宇宙飛行機関である.
科学分野:
- 惑星科学は惑星科学である.
- 大気科学 大気科学
- アストロケミストリー アストロケミストリー
背景:
- 木星の大気組成は,ガス巨星の形成を理解するための鍵です.
- 以前のモデルでは,木星にヘリウムが豊富に含まれていることが示唆されていた.
- In situ測定は,大気モデルのための重要なデータを提供します.
研究 の 目的:
- 木星の大気中のヘリウム豊富な精度を決定するために.
- 木星のヘリウムレベルをプレソラー値と比較するために.
- 木星内のヘリウムと水素の分離の初期段階を調査する.
主な方法:
- NASAのガリレオ探査機を利用して,地上の大気測定を行いました.
- ジャミン干渉計を用いて大気屈折率を測定した.
- 木星の大気圏内で,2~14barの圧力で測定を行った.
主要な成果:
- 大気中のヘリウムモルの分子は0.136 +/- 0.004.4であった.
- ヘリウムの質量分子は,プレソラー値よりわずかに低いことを決定した.
- データは,進行中のヘリウム-水素分離の初期段階を示しています.
結論:
- 測定されたヘリウムの豊富さは,木星の大気組成に関する私たちの理解を洗練します.
- 結果は,木星の内部プロセスがまだ進化していることを示唆しています.
- これは,惑星の形成と進化の歴史についての洞察を提供します.
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