Results 221 to 230 of about 5,935,155 (266)
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Publications of the Astronomical Society of the Pacific, 1973
A new procedure is given for deriving the distribution of the orbital planes of binaries in clusters, based upon the statistics of the observed mass functions. Tables are provided for applications of the method. The procedure is applied to IC 4665 and an average inclination of 45 and a small dispersion of the inclinations is found.
O. Ferrer, C. Jaschek
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A new procedure is given for deriving the distribution of the orbital planes of binaries in clusters, based upon the statistics of the observed mass functions. Tables are provided for applications of the method. The procedure is applied to IC 4665 and an average inclination of 45 and a small dispersion of the inclinations is found.
O. Ferrer, C. Jaschek
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1969
We want to compare the colour-magnitude diagrams of several open clusters (Figure 71). These diagrams will of course differ because of the different distances. Apart from this effect, one might expect to find in all of them the same relation between colour and magnitude, as long as the stars have not evolved away from the ‘zero age main sequence’ (ZAMS)
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We want to compare the colour-magnitude diagrams of several open clusters (Figure 71). These diagrams will of course differ because of the different distances. Apart from this effect, one might expect to find in all of them the same relation between colour and magnitude, as long as the stars have not evolved away from the ‘zero age main sequence’ (ZAMS)
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1987
We want to compare the colour-magnitude diagrams of several open clusters (Figure 71). These diagrams will of course differ because of the different distances. Apart from this effect, one might expect to find in all of them the same relation between colour and magnitude, as long as the stars have not evolved away from the ‘zero age main sequence’ (ZAMS)
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We want to compare the colour-magnitude diagrams of several open clusters (Figure 71). These diagrams will of course differ because of the different distances. Apart from this effect, one might expect to find in all of them the same relation between colour and magnitude, as long as the stars have not evolved away from the ‘zero age main sequence’ (ZAMS)
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Open Clusters and Superbubbles
AIP Conference Proceedings, 2010This paper is the continuation of our work of 2008 concerning the open clusters (OCs) in system of the radio loops I–IV. In the present paper we have studied the location of OCs in relation to the Local Bubble, the Eridanus Superbubble and the Gum Nebula. As before, extremely low density of OCs from Kharchenko et al. and Dias et al.
Rakhil Shatsova, Marina Gozha
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Tetrahedral Chalcogenide Clusters and Open Frameworks
Chemistry – A European Journal, 2004AbstractBy integrating porosity with electrical or optical properties, microporous chalcogenides may have unique applications. Here we review recent advances and discuss concepts in the synthesis and crystal structure of tetrahedral clusters and their frameworks. These chalcogenides can be viewed as trivalent metal chalcogenides doped with tetra‐, di‐,
Xianhui Bu(Calif State Univ, Dept Chem & Biochem) +2 more
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2015
The observable properties of star clusters hold vital information concerning the star formation process. In this introductory chapter we review the properties of open clusters within the Galaxy. Starting with the most basic properties of open clusters, such as age, mass and metallicity, we then move onto a discussion of how these properties vary ...
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The observable properties of star clusters hold vital information concerning the star formation process. In this introductory chapter we review the properties of open clusters within the Galaxy. Starting with the most basic properties of open clusters, such as age, mass and metallicity, we then move onto a discussion of how these properties vary ...
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2001
We study the evolution of relatively young Galactic open clusters, such as the Pleiades, Praesepe and the Hyades. The calculations include a realistic mass function, primordial binaries and the external potential of the parent Galaxy. The equations of motions of all stars are computed using the GRAPE-4 while taking the evolution of single stars and ...
Simon F. Portegies Zwart +3 more
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We study the evolution of relatively young Galactic open clusters, such as the Pleiades, Praesepe and the Hyades. The calculations include a realistic mass function, primordial binaries and the external potential of the parent Galaxy. The equations of motions of all stars are computed using the GRAPE-4 while taking the evolution of single stars and ...
Simon F. Portegies Zwart +3 more
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Metallicities of open clusters
Astronomische Nachrichten, 1991AbstractThe main aim of this paper is (i) to examine the available metallicity data of open clusters, (ii) to gather a large set of homogeneous estimations of the characteristics, and (iii) to check whether open cluster metallicities are related to spatial and age distribution of these objects.
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1992
We have used the Lund catalogue of Open Cluster Data, kindly supplied by Gosta Lynga (1987) and updated by Kenneth Janes (1989). This data has been used by Lynga and Palous (1987) to describe the local kinematics of open star clusters, and by Janes, Tilley, and Lynga (1988) to describe the general properties of the open cluster system.
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We have used the Lund catalogue of Open Cluster Data, kindly supplied by Gosta Lynga (1987) and updated by Kenneth Janes (1989). This data has been used by Lynga and Palous (1987) to describe the local kinematics of open star clusters, and by Janes, Tilley, and Lynga (1988) to describe the general properties of the open cluster system.
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