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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 catalogued here is presented. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 68 21 List of stars observed table1.dat 28 1082 Catalog of precise radial velocities of 21 near-by stars
Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
1- 4 I4 --- HR Bright Star Catalog number 6- 11 I6 --- HD HD Catalog number 13- 21 A9 --- Name *Star name (1) 25- 26 I2 h RAh Right Ascension J2000 (hours) (2) 28- 29 I2 min RAm Right Ascension J2000 (minutes) (2) 31- 34 F4.1 s RAs Right Ascension J2000 (seconds) (2) 36 A1 --- DE- Declination J2000 (sign) (2) 37- 38 I2 deg DEd Declination J2000 (degrees) (2) 40- 41 I2 arcmin DEm Declination J2000 (minutes) (2) 43- 44 I2 arcsec DEs Declination J2000 (seconds) (2) 47- 51 F5.2 mag Bmag Blue magnitude (2) 53- 57 F5.2 mag Vmag Visual magnitude (2) 59- 64 A6 --- SpType MK spectral classification (2) 66- 68 I3 mas Plx Parallax, from Hipparcos catalog (I/239)
Note (1): This is specified for all stars except HR 8832 which does not have a name designated in the Bright Star Catalog. Note (2): from SIMBAD data-base
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- HR Bright Star Catalog number 7- 15 F9.4 d JD-2440000 Epoch (Barycentric JD-2440000) 16- 23 F8.1 m/s RV Precise Radial Velocity 24- 28 F5.1 m/s e_RV Internal (standard) error of RV
History: * 08-May-1995: Catalog prepared by A. W. Irwin [University of Victoria] * 14-Mar-2005: table "stars.dat" added at CDS
(End) A. W. Irwin [University of Victoria] 08-May-1995
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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