ADC/CDS Standard Document for Catalog:
/catalogs/3/3185/

1. Use the ADC Data Viewer Suite to visualize the data.
2. Get the data files via anonymous FTP. (See Note.)

III/185    Search for Jupiter-Mass Companions        (Walker+, 1995)
================================================================================
A Search for Jupiter-Mass Companions to Near-By Stars
   Walker G.A.H., Walker A.R., Irwin A.W., Larson A.M., Yang S.L.S.,
   Richardson D.C.
   <Icarus, 116, 359-375 (1995)> 
   =1995Icar..116..359W
================================================================================
ADC_Keywords: Radial velocities; Planets 
                                                                                
Abstract:                                                                       
   From 1980 to 1992, the radial velocities of 17 bright solar-type dwarf 
   and 4 subgiant stars were monitored at the Canada-France-Hawaii 3.6-m 
   telescope (CFHT).  

Introduction:
   The experimental technique, in which lines of the 870 nm 3-0 
   vibration-rotation band of hydrogen fluoride are imposed in absorption 
   on the stellar spectra to act as wavelength fiducials, is capable of 
   measuring long-term changes in the velocity of a star with a precision 
   near 15 m/s from a single spectrum.  For comparison, the orbit of the 
   Sun about the barycentre, which is dominated by the motion of Jupiter, 
   has a period of 11.9 years with an amplitude of some 13 m/s. Thus, by 
   making several observations per year, we could have detected the reflex 
   motion caused by a Jupiter-mass planet orbiting a nearby star provided 
   the orbital plane was close to the line of sight. 

   To date, this planetary search has been the only long-term program on the
   CFHT.  Between three and six pairs of nights per year were allocated
   over twelve years, apart from a single gap of six months in 1983.  The
   15 m/s precision per observation was achieved to a limiting I magnitude
   of 4 for exposures of typically less than half an hour.  The program was
   completed in 1992.  In the published paper the analysis of the 1082 
   individual differential velocities that are cataloged here is presented.
                                                                              
File Summary:                                                                   
--------------------------------------------------------------------------------
 FileName        Lrecl     Records    Explanations          
--------------------------------------------------------------------------------
ReadMe              80           .    This file                               
table1.dat          45        1082    Catalog of precise radial velocities
                                      of 21 near-by stars
--------------------------------------------------------------------------------
                                                                                
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
   Bytes Format  Units         Label     Explanations
--------------------------------------------------------------------------------
   1-  4  I4     ---           HR        Bright Star Catalog number
   5- 11  I7     ---           HD        HD Catalog number
  12- 21  A10    ---           Name     *Star name
  22- 32  F11.4  d             RJD       Epoch (Barycentric JD - 2440000)
  33- 40  F8.1   m/s           PRV       Precise Radial Velocity
  41- 45  F5.1   m/s           ERR       Internal (standard) error of PRV
-------------------------------------------------------------------------------
Note on Name:  
   This is specified for all stars except HR 8832 which does not have a
   name designated in the Bright Star Catalog.
================================================================================
(End)             A. W. Irwin     [University of Victoria]         May-08-95