Multi-order TODCOR: Application to observations taken with the CORALIE echelle spectrograph II. A planet in the system HD 41004

S. Zucker*, T. Mazeh, N. C. Santos, S. Udry, M. Mayor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

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 a2.5 MJ 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.

Original languageEnglish
Pages (from-to)695-698
Number of pages4
JournalAstronomy and Astrophysics
Volume426
Issue number2
DOIs
StatePublished - Nov 2004

Keywords

  • Methods: data analysis
  • Stars: binaries: spectroscopic
  • Stars: individual: HD 41004
  • Stars: low-mass, brown dwarfs
  • Techniques: radial velocities

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