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Astrometric planet search around southern ultracool dwarfs: V. Discovery of the exoplanet candidate PALTA-1 b
J. Sahlmann, P. F. Lazorenko, E. L. Martín +3
We report the discovery of PALTA-1 b, a sub-Jupiter mass exoplanet candidate orbiting the nearby early-L dwarf DENIS-P J1253108-570924 (DE1253-57) located at a distance of ~17 pc.…
Predicting Gaia astrometry's ability to constrain the populations of circumbinary planets
Thomas A. Baycroft, Amaury H. M. J Triaud, Johannes Sahlmann
The coming data releases of Gaia are expected to result in an upheaval of exoplanet science, in particular for long period giant planets (…
ExoDNN: Boosting exoplanet detection with artificial intelligence. Application to Gaia Data Release 3
A. Abreu, J. Lillo-Box, A. M. Perez-Garcia +3
We combine Gaia Data Release 3 and artificial intelligence to enhance the current statistics of substellar companions, particularly within regions of the orbital period vs. mass pa…
Machine learning-based identification of Gaia astrometric exoplanet orbits
Johannes Sahlmann, Pablo Gómez
The third Gaia data release (DR3) contains 170\,000 astrometric orbit solutions of two-body systems located within 500 pc of the Sun. Determining component masses in th…
Gaia Focused Product Release: Asteroid orbital solution. Properties and assessment
Gaia Collaboration, P. David, F. Mignard +2
Context. We report the exploitation of a sample of epoch astrometry for 157 000 asteroids, the same object in the Gaia Data Release 3, extended over the time coverage planned for t…
WD0141-675: A case study on how to follow-up astrometric planet candidates around white dwarfs
Laura K. Rogers, John Debes, Richard J. Anslow +22
This work combines spectroscopic and photometric data of the polluted white dwarf WD0141-675 which has a now retracted astrometric super-Jupiter candidate and investigates the most…