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Публикации по объекту
Pulkovo compilation of radial velocities for 35495 stars in a common system.
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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.
| SANTIAGO 91, a right ascension catalogue of 3387 stars (equinox J2000).
The positions in right ascension of 3387 stars belonging to the Santiago67 Catalogue, observed with the Repsold Meridian Circle at Cerro Calan,National Astronomical Observatory, during the period 1989 to 1994, aregiven. The average mean square error of a position, for the wholeCatalogue, is +/-0.009 s. The mean epoch of the catalogue is 1991.84.
| 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.
| Large and kinematically unbiased samples of G- and K-type stars. VI - Evolved stars in the Moore-Paddock-Wayman sample
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1990PASP..102..507E&db_key=AST
| Fine structure of the H-R diagram for 138 stars in the solar neighbourhood
The evolution of a large number of stars in the solar neighborhood wasstudied on the basis of H-R diagrams converted to log T(eff), M(bol).Effective temperatures were based on reliable model-atmospherecomputations, and reasonably accurate absolute bolometric magnitudeswere obtained from absolute magnitudes of stars having well determinedparallaxes and requiring small bolometric corrections. A special metalindex was also evaluated for each star, in order to account forvariation of metal content from star to star. The observational logT(eff), M(bol) diagrams are discussed in relation to the theoreticalevolutionary and isochrone grids of Hejlesen (1975). The masses of thestars in the sample are estimated, and the ages of evolved stars arealso estimated. A metal content versus age relation for disk stars isgiven.
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Группы:
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Наблюдательные данные и астрометрия
| Созвездие: | Печь |
| Прямое восхождение: | 02h12m34.47s |
| Склонение: | -26°19'21.0" |
| Видимая звёздная величина: | 7.922 |
| Расстояние: | 154.083 парсек |
| Собственное движение RA: | -23.1 |
| Собственное движение Dec: | -26.9 |
| B-T magnitude: | 9.337 |
| V-T magnitude: | 8.039 |
Каталоги и обозначения:
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