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Author

D. Ségransan

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Open access Sep 2026

Upside down: GJ 3090 b the first retrograde exoplanet around an M dwarf detected with NIRPS

The angle between stellar spin axis and planetary orbital plane can provide key insights into the formation and dynamical evolution of planetary systems. In particular, this measurement in multi-planet systems can be used to further discriminate between different competing migration scenarios. We present six transit...

Y. Carteret, V. Bourrier, L. Parc et al. · 0 citations
Review Open access Oct 2026

Astrometric planet search around southern ultracool dwarfs. V. Discovery of the exoplanet candidate PALTA-1 b

We report the discovery of ,M_̊m Jup, depending on the uncertain mass of the ultracool dwarf host. The system's mass ratio is about 0.010, and the relative separation is estimated at 1.6--3.4 au. This discovery finalises a larger astrometric planet search survey that targeted 20 nearby ultracool dwarfs and previously d...

J. Sahlmann, P. Lazorenko, E. Martín et al. · 0 citations

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