2004/10/11 by S. Zucker, T. Mazeh, N. C. Santos +2 · 8 citations
Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Binary number #Brown dwarf #Component (thermodynamics) #Orbit (dynamics) #Physics #Planet #Radial velocity #Spectral line #Spectrograph #Stars #Stellar, planetary, and galactic studies #Term (time)
paper · pdf · doi:10.1051/0004-6361:20040384
openalex publication_date 2004/10/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
In previous works we reported the detection of a brown-dwarf companion orbiting the faint stellar component of the visual binary HD 41004. This had been achieved by applying the multi-order TwO-Dimensional CORrelation (TODCOR) algorithm to CORALIE spectra. A long-term trend of the primary component had also been detected. In this paper we report follow-up observations that seem to unravel the nature of this long-term trend. The new measurements are consistent with the presence of a planet in an eccentric orbit around HD 41004 A. Thus, HD 41004 is a unique hierarchical system with a brown dwarf that accompanies the faint M-component, and a planet that orbits the brighter K-component.