Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue. We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
A search for binaries in the globular cluster NGC 3201 We present BV charge coupled devices (CCD) and Automated Plate Measuring(APM) photometry, accurate astrometry and 1859 radial velocities for1318 stars within approximately 36 min. of the Galactic globular clusterNGC 3201. The field and cluster populations separate unambiguously intwo distinct samples since the systemic radial velocity of NGC 3201 is494.2 km/sec. After removal of the 19 known NGC 3201 photometricvariables in our sample, we have a database of 930 radial velocities for420 member giants (276 of which have multiple velocity measurements)with which to identify spectroscopic binaries on the basis of radialvelocity variations. The mean time span of the observations is 1.7 yr,with coverage up to approximately 6 yr for our best-studied stars. MonteCarlo simulations of the observed velocity variations have providedupper limits to the cluster binary fraction (for binaries with 0.1 lessthan or equal to P less than or equal to 5 to 10 yr and mass ratios inthe range 0.1 to 1 of 0.06 to 0.10 (circular orbits) and 0.15 to 0.18(eccentric orbits). These results suggest an incidence of binarism forNGC 3201 consistent with the corresponding incidence among nearbysolar-type stars having similar periods and mass ratios (0.04 to 0.08)and that for a small sample of other globular clusters (0.05-0.12)studied by Hut et al. (1992).
