Searching for substellar companion candidates with Gaia. I. Introducing the GaiaPMEX tool

The Gaia mission is expected to yield the detection of several thousands of exoplanets, perhaps at least doubling the number of known exoplanets. Although the harvest is expected to occur when the astrometric time series will be published with DR4 at the eve of 2026, the DR3 is already a precious da...

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Published in:Astronomy and astrophysics (Berlin) 2024-09
Main Authors: Kiefer, Flavien, Lagrange, Anne-Marie, Rubini, Pascal, Philipot, Florian
Format: Article
Language:English
Subjects:
Sciences of the Universe
Online Access:Get full text
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Summary:The Gaia mission is expected to yield the detection of several thousands of exoplanets, perhaps at least doubling the number of known exoplanets. Although the harvest is expected to occur when the astrometric time series will be published with DR4 at the eve of 2026, the DR3 is already a precious database to search for exoplanet beyond 1 au. With this objective, we characterized multiple systems by exploiting two astrometric signatures derived from the DR3 astrometric solution of bright sources (G
ISSN:0004-6361
1432-0756
DOI:10.48550/arXiv.2409.16992