Obliquity Constraints for the Extremely Eccentric Sub-Saturn Kepler-1656 b

Obliquity Constraints for the Extremely Eccentric Sub-Saturn Kepler-1656 b

The orbits of close-in exoplanets provide clues to their formation and evolutionary history. Many close-in exoplanets likely formed far out in their protoplanetary disks and migrated to their current orbits, perhaps via high-eccentricity migration (HEM), a process that can also excite obliquities. A...

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Veröffentlicht in:arXiv.org 2024-07
Hauptverfasser: Rubenzahl, Ryan A, Howard, Andrew W, Halverson, Samuel, Petrovich, Cristobal, Angelo, Isabel, Stefánsson, Guðmundur, Dai, Fei, Householder, Aaron, Fulton, Benjamin, Gibson, Steven R, Roy, Arpita, Shaum, Abby P, Isaacson, Howard, Brodheim, Max, Deich, William, Hill, Grant M, Holden, Bradford, Huber, Daniel, Laher, Russ R, Lanclos, Kyle, Payne, Joel N, Petigura, Erik A, Schwab, Christian, Walawender, Josh, Wang, Sharon X, Weiss, Lauren M, Winn, Joshua N, Wright, Jason T
Format: Artikel
Sprache:eng
Schlagworte:
Eccentric orbits
Extrasolar planets
Misalignment
Orbits
Planet formation
Planetary evolution
Planetary orbits
Protoplanetary disks
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Zusammenfassung:The orbits of close-in exoplanets provide clues to their formation and evolutionary history. Many close-in exoplanets likely formed far out in their protoplanetary disks and migrated to their current orbits, perhaps via high-eccentricity migration (HEM), a process that can also excite obliquities. A handful of known exoplanets are perhaps caught in the act of HEM, as they are observed on highly eccentric orbits with tidal circularization timescales shorter than their ages. One such exoplanet is Kepler-1656 b, which is also the only known non-giant exoplanet (
ISSN:2331-8422