Author

J. R. Larsen

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Preprint Sep 2026

Radial velocity follow-up of \textit{Gaia} astrometric substellar companions: six confirmed brown dwarfs and 13 impostor binaries

With microarcsecond precision, \textit{Gaia} has made the astrometric discovery of substellar companions feasible. However, follow-up observations are needed to check on orbital solutions and rule out astrophysical false positives. We validate and characterise a sample of 20 \textit{Gaia} Data Release 3 (DR3) astrometr...

M. Marcussen, S. Albrecht, Kamil K. Kalinowski et al. · 1 citation

Review Open access Sep 2026

Asteroseismology and interferometry of the F7V spectroscopic binary χ Draconis A in the TESS CVZ

Asteroseismology provides precise stellar parameters, which are particularly useful for benchmark stars with accurate independent measurements. However, most benchmark solar-like oscillators are red giants. We present a detailed analysis of the asteroseismic main-sequence benchmark star ̧hi Dra A in the Transiting Exop...

J. Rudrasingam, M. Lund, F. Grundahl et al. · Astronomy & Astrophysics · 0 citations