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HD 9696


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Photometric and kinematic studies of open star clusters. I. NGC 581 (M 103)
We present CCD photometry and a proper motion study of the young openstar cluster, NGC 581 (M 103). Fitting isochrones to the colourmagnitude diagram, we found an age of 16 +/- 4 Myr and a distance ofroughly 3 kpc for this cluster. The proper motion study identifies 77stars of V=14.5 mag or brighter to be cluster members. We combinemembership determination by proper motions and statistical field starsubtraction to derive the IMF of the cluster and find a quite steepslope of Gamma =-1.80.

The HR-diagram from HIPPARCOS data. Absolute magnitudes and kinematics of BP - AP stars
The HR-diagram of about 1000 Bp - Ap stars in the solar neighbourhoodhas been constructed using astrometric data from Hipparcos satellite aswell as photometric and radial velocity data. The LM method\cite{luri95,luri96} allows the use of proper motion and radial velocitydata in addition to the trigonometric parallaxes to obtain luminositycalibrations and improved distances estimates. Six types of Bp - Apstars have been examined: He-rich, He-weak, HgMn, Si, Si+ and SrCrEu.Most Bp - Ap stars lie on the main sequence occupying the whole width ofit (about 2 mag), just like normal stars in the same range of spectraltypes. Their kinematic behaviour is typical of thin disk stars youngerthan about 1 Gyr. A few stars found to be high above the galactic planeor to have a high velocity are briefly discussed. Based on data from theESA Hipparcos astrometry satellite and photometric data collected in theGeneva system at ESO, La Silla (Chile) and at Jungfraujoch andGornergrat Observatories (Switzerland). Tables 3 and 4 are onlyavailable in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

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.

La mesure des vitesses radiales au prisme objectif. IX - 3e liste de vitesses radiales déterminées au prisme objectif à vision directe
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Stellar Spectra and Colors in a Milky way Region in Cassiopeia.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1955ApJS....2..123F&db_key=AST

Étude spectrophotométrique et statistique d'une région obscure dans Cassiopée
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Observation and Astrometry data

Constellation:Cassiopée
Right ascension:01h36m37.94s
Declination:+61°16'36.2"
Apparent magnitude:8.777
Distance:431.034 parsecs
Proper motion RA:-1.7
Proper motion Dec:-4.7
B-T magnitude:9.057
V-T magnitude:8.801

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 9696
TYCHO-2 2000TYC 4031-1853-1
USNO-A2.0USNO-A2 1500-01638030
HIPHIP 7497

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