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J/A+A/426/695       Radial velocities of HD 41004A/B           (Zucker+, 2004)
Multi-order TODCOR: application to observations taken with the CORALIE echelle
spectrograph.
II. A planet in the system HD41004.
    Zucker S., Mazeh T., Santos N.C., Udry S., Mayor M.
   <Astron. Astrophys. 426, 695 (2004)>
   =2004A&A...426..695Z
ADC_Keywords: Radial velocities ; Binaries, spectroscopic

Keywords: methods: data analysis - techniques: radial velocities -
          stars: binaries: spectroscopic - stars: individual: HD 41004 -
          stars: low-mass, brown dwarfs

Abstract:
    In previous works we reported the detection of a brown-dwarf companion
    orbiting the faint stellar component of the visual binary HD41004.
    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 on follow-up observations that seem to unravel
    the nature of this long-term trend. The new measurements are
    consistent with the presence of a 2.5MJ planet in an eccentric orbit
    around HD41004A. Thus, HD41004 is a unique hierarchical system where
    we have a brown-dwarf that accompanies the faint M-component, and a
    planet that orbits the brighter K-component.

Description:
    The table presents 149 measurements of the radial velocities of
    HD41004A and HD41004B, including the first 103 which had already been
    published in a previous paper (2003A&A...404..775Z). The spectra used
    for the derivation were observed with CORALIE and the velocities were
    derived using Multi-Order TODCOR. The precision of the primary
    velocity is about 0.010km/s and the precision of the secondary is
    about 0.60km/s.
Objects:
    -----------------------------------------
       RA  (2000)  DE       Designation(s)
    -----------------------------------------
    05 59 49.6 -48 14 22.9  HD 41004A
    05 59 49.6 -48 14 22.9  HD 41004B
    -----------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        25      149   The radial velocities of HD41004A and HD41004B


See also:
    J/A+A/404/775 : Radial velocities of HD 41004A/B (Zucker+, 2003)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1- 13  F13.5 d       JD        Julian Date
  15- 20  F6.3  km/s    RVA       Radial velocity of HD41004A
  22- 25  F4.1  km/s    RVB       Radial velocity of HD41004B


Acknowledgements: Shay Zucker 

(End)                                      Patricia Vannier[CDS]     21-Jul-2004