Stellar Spin–Orbit Alignment for Kepler-9, a Multi-transiting Planetary System with Two Outer Planets Near 2:1 Resonance
| Autor: | Howard Isaacson, John M. Brewer, Gregory Laughlin, Songhu Wang, Debra A. Fischer, Brett C. Addison, Andrew W. Howard |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Earth and Planetary Astrophysics (astro-ph.EP) Outer planets 010504 meteorology & atmospheric sciences FOS: Physical sciences Astronomy and Astrophysics Astrophysics Planetary system 01 natural sciences Kepler Resonance (particle physics) Orbit Space and Planetary Science Planet 0103 physical sciences Polar Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics 0105 earth and related environmental sciences Spin-½ Astrophysics - Earth and Planetary Astrophysics |
| Popis: | We present spectroscopic measurements of the Rossiter-McLaughlin effect for the planet b of Kepler-9 multi-transiting planet system. The resulting sky-projected spin-orbit angle is $\lambda=-13^{\circ} \pm 16^{\circ}$, which favors an aligned system and strongly disfavors highly misaligned, polar, and retrograde orbits. Including Kepler-9, there are now a total of 4 Rossiter-McLaughlin effect measurements for multiplanet systems, all of which are consistent with spin-orbit alignment. Comment: Accepted for publication in the Astronomical Journal |
| Databáze: | OpenAIRE |
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