Unification of VW ARIETIS observations obtained in multisite campaign.
Not Available
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A catalogue of [Fe/H] determinations: 1996 edition
A fifth Edition of the Catalogue of [Fe/H] determinations is presentedherewith. It contains 5946 determinations for 3247 stars, including 751stars in 84 associations, clusters or galaxies. The literature iscomplete up to December 1995. The 700 bibliographical referencescorrespond to [Fe/H] determinations obtained from high resolutionspectroscopic observations and detailed analyses, most of them carriedout with the help of model-atmospheres. The Catalogue is made up ofthree formatted files: File 1: field stars, File 2: stars in galacticassociations and clusters, and stars in SMC, LMC, M33, File 3: numberedlist of bibliographical references The three files are only available inelectronic form at the Centre de Donnees Stellaires in Strasbourg, viaanonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5), or viahttp://cdsweb.u-strasbg.fr/Abstract.html
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On the multiperiodicity of the δ Scuti star BDS 1269A (VW Arietis). The fifth campaign of STEPHI network in 1993.
This paper reports on the fifth STEPHI multi-site photometric campaignin 1993 devoted to the δ Scuti star BDS 1269A (VW Ari). Theobservation yielded a data set of 150.7 hours. Our analysis has resultedin 7 identified frequencies. These frequencies exhibit threecouple-frequency character, and also fit the previous investigationsquite well. An attempt to identify the pulsation modes is made, but noequidistant evidence can be detected, and a second-order effect forrotational splitting has to be considered to explain the complicatednature of BDS 1269A.
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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.
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Radial velocity measurements. II - Ground-based observations of the program stars for the HIPPARCOS satellite
New radial velocities for 446 stars of magnitude 9.0 or brighter in 1616-sq-deg fields of the Northern Hemisphere are determined by automaticPDS measurement of 80-A/mm-dispersion spectra obtained at theObservatoire de Haute Provence using a 17-cm-diameter objective prism.The fields were selected to provide data for the input catalog of theESA Hipparcos astrometric satellite. The measurement techniques andprecision are discussed, and the results are presented in extensivetables and graphs.
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The remarkable multiple mode Delta Scuti star BDS 1269A
Over 1600 differential photoelectric Stroemgren b measurements on BDS1269A obtained during a 6 month period in 1982-1983 have been analyzedusing periodiograms and convergent least squares. Seven frequencies areidentified in the data set. This frequency set, when combined with otherfrequencies found in data obtained by Rucinski in 1976, suggests thatthe main pulsation mode of BDS 1269A is nonradial. The completefrequency representation also includes lower amplitude radial modes. Thecurrent analysis suggests that this star may have transferred power intoalternative modes since 1976 and in this regard might be similar toanother nonradial pulsator, 21 Mon.
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Intermediate band, H-beta, and RI photometry of a large sample of stars unbiased with respect to their motion. I - The F-type stars
Intermediate band and H-beta data from a sample of 1000 stars earlierthan type G2 are presented and discussed relative to the stars'luminosities, metal abundances, and motion. Two groups of stars areconsidered, one within 10 arcsec of the South Galactic Pole and 8.5-8.6mag stars contained in the Moore-Paddock (1950) and Wayman (1960)samples (MP-W). The MP-W stars are mainly old disk population stars withmetal abundances of 4-0.25 solar values. Possible age-abundancedistribution-luminosity connections are explored, as are techniques forseparating old and young disk population objects.
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KPNO lunar occultation summary. I
The results of a program to photoelectrically record lunar occultationsat KPNO are described. The program emphasizes the observation of knownor suspected double/multiple stars as well as the observation of starswith resolvable angular diameters.
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Visual multiples. VI - Beta 1269, a system containing abnormal stars
The primary star is reported by Mechler (1974) to be a metal-poorlight-variable while the secondary is reported to be normal. Recentmeasures at the U.S. Naval Observatory tend to confirm the evidence fora common proper motion. Both stars have constant radial velocities butwith means that differ by 5.0 km/s; it is not clear whether thisdifference provides evidence against common space motions. The spectraltype of the primary is F0 IV with A3 V metallic lines, while that of thesecondary is F1 Vp(G-band strong). Thus both stars are abnormal forreasons not known.
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Photoelectric observations of lunar occultations. XI
Occultation observations of 466 events are presented. These includediameter measures of Aldebaran under very bad conditions and a gooddiameter measure of 82 Vir. The list includes 91 reappearances andobservations of 34 double or multiple stars, both new and previouslyknown. The inconsistencies of the observations of Kui 88 are discussed.Further observations are most desirable.
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The periods of BDS 1269 A
In the visual binary BDS 1269, the A component is a delta Scuti star andis apparently metal-poor. The B component is apparently metal-normal.New photometric observations of both components have been obtained. BDS1269 B is not variable. New and existing observations of BDS 1269 A havebeen analyzed for component periods. There is a component with a periodof about 0.090 d and a relatively constant amplitude. There is a secondcomponent with a period of about 0.150 d. Either this component has avariable amplitude or there is a third component which modulates orotherwise interferes with the second component.
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The unique visual binary BDS 1269
Results are reported for uvby photoelectric photometry of the unusualvisual binary BDS 1269, whose components strongly differ in metalabundance. It is found that the metal-deficient primary, HD 15165,pulsates in a beat mode, that the largest amplitude is greater than 0.12mag, and that the primary period is about 0.16 day. The absolute visualmagnitude of HD 15165 is estimated to be approximately 0.9. The resultsindicate that HD 15165 has the luminosity and pulsational properties ofa Delta Scuti-type star or (less likely) a dwarf Cepheid. The origin ofthe binary system is briefly considered.
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Observations of BDS 1269, a metal-deficient del SCT star.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976PASP...88..251S&db_key=AST
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UVBY beta study of A-and F-type visual binaries. I.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976AJ.....81..107M&db_key=AST
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BDS 1269: A Possible Physical Pair with a Metal-Deficient Primary
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974PASP...86..279M&db_key=AST
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Radial Velocities, Spectral Types, and Luminosity Classes of 820 Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1950ApJ...112...48M&db_key=AST
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