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A morphological analysis of NGC 7296
A morphological analysis has been presented as a completed work forestimating the most physical properties of open star cluster NGC 7296.For this purpose, near-IR database of the digital Two Micron All SkySurvey (2MASS) has been used. Center, radius, membership, distances,reddening, age, metallicity, luminosity and mass functions, total mass,mass segregation and the dynamical relaxation time of the cluster havebeen estimated.
| Photometric survey of marginally investigated open clusters. I. Basel 11b, King 14, Czernik 43
Aims.To progress in galactic studies based on open clusters, e.g.cluster formation rate or kinematical properties, one needs to improvethe number of open clusters observed. However, only half of the 1700known galactic open clusters have been properly observed so far, makingany statistical investigation insignificant, especially at largerdistances from the Sun. Methods: .We study marginallyinvestigated or neglected open clusters with Bessell CCD BVR photometry,whose data were used to fit isochrones to the individual color-magnitudediagrams. Results: .We examined the galactic clusters Basel 11b,King 14 and Czernik 43, the last being observed for the first time tothis extent. As well as a careful comparison to available photometry,their parameters such as age, interstellar reddening, distance andapparent diameter were determined. The obtained cluster properties wereverified by near infrared 2MASS data. The three investigatedintermediate age clusters are all located in the galactic disk withdistances between 1.8 and 3.0 kpc from the Sun.
| CCD-Δ a and BVR photometry of NGC 7296
The first CCD photometric investigation of the open cluster NGC 7296 upto now was performed within the narrow band Δ a photometricsystem, which enables us to detect peculiar objects. A deeperinvestigation of that cluster followed, using the standard BVR-Besselfilter set. The age and E(B-V) was determined independently to log t =8.0 ± 0.1 and 0.15 ± 0.02, respectively by using Δ aand broadband photometry. In total five Be/Ae objects and two metal-weakstars showing significant negative Δ a-values as well as oneclassical chemically peculiar star could be identified within thatintermediate age open cluster.Based on observations at the Hvar Observatory, University of Zagreb andthe Leopold-Figl Observatory for Astrophysics, University of Vienna.
| La constellation d'octobre : le Lezard.
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| Catalogue of Eclipsing and Spectroscopic Binary Stars in the Regions of Open Clusters
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