Peeking at the formation of PDS 70 b

IF 14.3 1区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Nature Astronomy Pub Date : 2024-12-16 DOI:10.1038/s41550-024-02464-9

Luca Maltagliati

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窥探 PDS 的形成 70 b

系外行星大气中的碳/氧（C/O）比经常被用作巨行星形成历史的诊断工具。hchi - chun Hsu和他的同事测量了原行星PDS 70b的C/O比率，它仍然镶嵌在原行星盘的腔中，从而使我们能够与其他原行星PDS 70c一起，直接测试我们的原位行星形成理论。作者利用新升级的Keck行星成像仪和特征仪（KPIC）提取了PDS 70b在2.29 ～ 2.49 μm之间的高光谱分辨率光谱。光谱噪声较大，但在4.2 σ处可以探测到CO+H2O组合分子，并将C/O比限制在\({\,0.28}_{-0.12}^{+0.20}\)（≤0.63）% confidence level).

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来源期刊

Nature Astronomy Physics and Astronomy-Astronomy and Astrophysics

CiteScore

19.50

自引率

2.80%

发文量

252

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