The HD 191939 Exoplanet System is Well Aligned and Flat
We report the sky-projected spin–orbit angle λ for HD 191939 b, the innermost planet in a six-planet system, using Keck/KPF to detect the Rossiter–McLaughlin (RM) effect. Planet b is a sub-Neptune with radius 3.4 ± 0.8 R _⊕ and mass 10.0 ± 0.7 M _⊕ with an RM amplitude <1 m s ^−1 . We find the plane...
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| Principais autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Artigo |
| Jezik: | Inglês |
| Izdano: |
IOP Publishing
2024-01-01
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| Serija: | The Astronomical Journal |
| Teme: | |
| Online dostop: | https://doi.org/10.3847/1538-3881/ad79ed |
| Oznake: |
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