| Issue |
A&A
Volume 426, Number 2, November I 2004
|
|
|---|---|---|
| Page(s) | 695 - 698 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361:20040384 | |
| Published online | 11 October 2004 | |
Multi-order TODCOR: Application to observations taken with the CORALIE echelle spectrograph*,**
II. A planet in the system HD 41004
1
Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland e-mail: Shay.Zucker@obs.unige.ch
2
School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
3
Centro de Astronomia e Astrofísica da Universidade de Lisboa, Observatório Astronómico de Lisboa, Tapada da Ajuda, 1349-018 Lisboa, Portugal
Received:
4
March
2004
Accepted:
17
June
2004
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.
Key words: methods: data analysis / techniques: radial velocities / stars: binaries: spectroscopic / stars: individual: HD 41004 / stars: low-mass, brown dwarfs
© ESO, 2004
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