Absolute proper motions of open clusters. I. Observational data
Mean proper motions and parallaxes of 205 open clusters were determinedfrom their member stars found in the Hipparcos Catalogue. 360 clusterswere searched for possible members, excluding nearby clusters withdistances D < 200 pc. Members were selected using ground basedinformation (photometry, radial velocity, proper motion, distance fromthe cluster centre) and information provided by Hipparcos (propermotion, parallax). Altogether 630 certain and 100 possible members werefound. A comparison of the Hipparcos parallaxes with photometricdistances of open clusters shows good agreement. The Hipparcos dataconfirm or reject the membership of several Cepheids in the studiedclusters. Tables 1 and 2 are only available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
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UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars
A database of photoelectric UBV beta photometry for stars listed in theCase-Hamburg northern and southern Milky Way luminous stars surveys hasbeen compiled from the original research literature. Consisting of over16,000 observations of some 7300 stars from over 500 sources, thisdatabase constitutes the most complete compilation of such photometryavailable for intrinsically luminous stars around the Galactic plane.Over 5000 stars listed in the Case-Hamburg surveys still lackfundamental photometric data.
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A new study of the young open cluster NGC 7510.
Three-colour photographic photometry of the young open cluster NGC 7510based upon UBV observations made with the 122cm and 182cm Asiagoreflectors is presented here. A mean colour excess E(B-V)=1.12, adistance of 3.09kpc could be achieved for this cluster and 31 starscould be identified as photometric physical members. An age of10^7^years has been derived by comparison with standard isochrones. Thediscrepancy between the photometric and spectroscopic distances obtainedfor some stars is discussed and comparisons with recent investigationsof the same object are also given.
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CCD photometry of the distant young open cluster NGC 7510
CCD observations in B, V, and I passbands have been used to generatedeep V, (B-V), and V,(V-I) color-magnitude diagrams for the open clusterNGC 7510. The sample consists of 592 stars reaching down to V = 21 mag.There appears to be nonuniform extinction over the face of the clusterwith the value of color excess, E(B-V), ranging from 1.0 to 1.3 mag. Thelaw of interstellar extinction in the direction of the cluster is foundto be normal. A broad main sequence is clearly visible in bothcolor-magnitude diagrams. From the bluest part of the color-magnitudediagrams, the true distance modulus to the cluster has been estimated as12.5 = or - 0.3 mag and an upper limit of 10 Myr has been assigned forthe cluster age.
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Studies of luminous stars in nearby galaxies. I. Supergiants and O stars in the Milky Way.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978ApJS...38..309H&db_key=AST
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Interaction of hot stars and of the interstellar medium. II. Exciting stars and spectra of the bright knot inside the diffuse nebula Sharpless 157.
Abstract image available at:http://adsabs.harvard.edu/abs/1972A&A....18..373C
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Distance Moduli of Open Clusters.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1965ApJS...12..215H&db_key=AST
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Galactic clusters as indicators of stellar evolution and galactic structure
Not Available
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Interstellar Polarization of 405 Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1954ApJ...120..454H&db_key=AST
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Estrellas de alta luminosidad EN las vecindades de las constelaciones del Cisne Y Cefeo.
Not Available
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