Peering into the Starspots: The First Doppler Image of λ Andromedae

Researchers produced the first Doppler image of λ Andromedae, revealing four large starspots and refining its orbital parameters with high precision. By correcting radial velocity signals caused by these spots, they confirmed the star’s nearly circular orbit and identified its companion as a likely brown dwarf. This study improves our understanding of magnetic activity in evolved stars and its impact on orbital measurements.