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ケプラー-34bとケプラー-35bの周回二元惑星を通過している.
William F Welsh1, Jerome A Orosz, Joshua A Carter
1Astronomy Department, San Diego State University, 5500 Campanile Drive, San Diego, California 92182, USA. wfw@sciences.sdsu.edu
Nature
|January 13, 2012
まとめ
2つの新しい円周二元惑星,ケプラー-34bとケプラー-35bが,星のペアを周回していることが発見されました. これは,二重星のうち1%以上が巨大な惑星を宿していることを示しており,私たちの銀河系には何百万人もの惑星が存在することを示しています.
科学分野:
- 天文学と天体物理学について
- 惑星外科学とは,惑星外科学です.
背景:
- ほとんどの太陽のような星は,二重星系に存在する.
- 2つの星を周回する円二進惑星は理論化されていたが,ケプラー-16bまで決定的な証拠がなかった.
研究 の 目的:
- 追加の円二乗惑星の存在を確認し,その性質を研究する.
- 円二乗惑星の有病率と銀河系の人口を推定する.
主な方法:
- ケプラー宇宙望遠鏡のトランジットフォトメトリーデータを活用した.
- 光の曲線を分析して,宿主双星の前を通る惑星を検出しました.
主要な成果:
- 通過する2つの円周二元惑星の発見:ケプラー-34bとケプラー-35b.
- どちらも低密度のガス巨星で,宿主恒星とコプラナーに近い軌道にある.
- ケプラー-34bは289日で星を周回し,ケプラー-35bは131日で星を周回する.
結論:
- この発見は,近い二重星のうち1%以上は,コプラナー軌道にある巨大な惑星を宿していることを示している.
- これは,少なくとも数百万の円二乗惑星の銀河系の人口を示唆しています.
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