The Astrometric Resoeccentric Degeneracy: Eccentric Single Planets Mimic 2:1 Resonant Planet Pairs in Astrometry

Detections of long-period giant exoplanets will expand dramatically with Gaia Data Release 4, but interpreting these signals will require care. We derive the astrometric resoeccentric degeneracy: an astrometric analogue of the well-known radial velocity degeneracy in which a single eccentric planet...

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Detalles Bibliográficos

Principais autores:	Daniel A. Yahalomi, Tiger Lu, Philip J. Armitage, Megan Bedell, Andrew R. Casey, Adrian M. Price-Whelan, Malena Rice
Formato:	Artigo
Idioma:	Inglês
Publicado:	IOP Publishing 2026-01-01
Series:	The Astrophysical Journal Letters
Assuntos:	Astrometry Exoplanet systems Exoplanet detection methods Exoplanet dynamics Gaia
Acceso en liña:	https://doi.org/10.3847/2041-8213/ae42cd
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