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|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.
|Evolved GK stars near the sun. I - The old disk population|
A sample of nearly two thousand GK giants with intermediate band, (R,I),DDO and Geneva photometry has been assembled. Astrometric data is alsoavailable for most of the stars. The some 800 members of the old diskpopulation in the sample yield accurate luminosities (from two sources),reddening values and chemical abundances from calibrations of thephotometric parameters. Less than one percent of the objects arepeculiar in the sense that the flux distribution is abnormal. Thepeculiarity is signaled by strong CH (and Ba II) and weak CH. The CH+stars are all spectroscopic binaries, probably with white dwarfcompanions, whereas the CH- stars are not. A broad absorption band,centered near 3500 A, is found in the CH+ stars whereas the CH- objectshave a broad emission feature in the same region. The intensity of theseabsorptions and emissions are independent of the intensity of abnormalspectral features. Ten percent of the old disk sample have a heavyelement abundance from one and a half to three times the solar value.The distribution of the heavy element abundances is nearly a normal onewith a peak near solar abundance and ranges three times to one sixthsolar. The distribution of the (U, V) velocities is independent of theheavy element abundance and does not appear to be random. Ten percent ofthe old disk stars show a CN anomaly, equally divided between CN strongand CN weak. Several stars of individual astrometric or astrophysicalimportance are isolated.
|Walraven photometry of stars near the Luminous Blue Variable AG Carinae|
We present Walraven-photometric data of 114 stars of V in the 5.9 to14.7 range, within 17 arcmin of the Luminous Blue Variable AG Car (HD94910). The results are expressed in terms of V-magnitude in the Johnsonsystem and in observed and extinction-free colors in the Walravensystem.
|The distance and reddening of stars near the Luminous Blue Variable AG Carinae|
Stars of V less than about 13.5 in the region close to the Luminous BlueVariable AG Car (within 17 arcmin) have been studied in the Walravenphotometric system. The observed colors are used to derive the values ofTeff and log g. The intrinsic colors, predicted by model atmospheres,and the absolute visual magnitudes, predicted by stellar evolutionarytracks, are used to derive the extinction and the distances of 43 stars.We find a concentration of early type stars in the direction of AG Carwith distances between 1 and 10 kpc and E(B - V) in the range of 0.13 to0.68. The extinction versus distance relation suggests a distance of 4to 10 kpc for AG Car. Combining all distance criteria for AG Car, wefind a distance of 6 +/- 1 kpc, and Mbol = -10.8 +/- 0.4 mag withvariable M(v). AG Car does not belong to the Car OB1 or OB2 associationsat 2.5 kpc. We did not find a cluster of luminous stars at the distanceof AG Car, but we identified a few stars which may belong to the samecluster as AG Car.
|Large and kinematically unbiased samples of G- and K-type stars. IV - Evolved stars of the old disk population|
Modified Stromgren and (R,I) photometry, along with DDO and Genevaphotometry, are presented for a complete sample of evolved old-disk Gand K giants in the Bright Star Catalogue. Stars with ages of between1.5 x 10 to the 9th and 10 to the 10th yr are found to have anear-normal distribution of heavy element abundances, centered on anFe/H abundance ratio of -0.1 dex. The old disk clusters NGC 3680 and IC4651 contain red-straggler young-disk giants that are probablycontemporaries of the blue stragglers in the clusters.
|Large and kinematically unbiased samples of G- and K-type stars. II - Observations of evolved stars in the Bright Star sample. III - Evolved young disk stars in the Bright Star sample|
Four color and RI observations were obtained for a large sample ofG-type and K-type stars in the Bright Star Catalogue. Data are firstpresented for 110 evolved stars. Photometry of evolved young diskpopulation stars have then been calibrated for luminosity, reddening,and metallicity on the basis of results for members of the Hyades andSirius superclusters. New DDO results are given for 120 stars.
|Some Errors Detected in Three Catalogues|
|Régions H II de l'hémisphère austral|
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....3....1G&db_key=AST
|Variable Star Notes|
|Studies on Galactic Cepheids System. I. Absorption of Cepheids with known radial velocities and a nomogram for the computation of the galactocentric distance|
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