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The Dynamics of Open Clusters [PDF]
Symposium - International Astronomical Union, 1980 This is a review of a subject that turns out to be rather dismal. Both in theory and in observation we know and understand open clusters poorly – either in comparison with globular clusters or on an absolute basis.
Ivan R. King
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Kinematics of old open clusters [PDF]
Publications of the Astronomical Society of the Pacific, 1989 Radial velocities have been determined for six old open clusters in the Galactic anticenter. Moderate-resolution spectra were obtained for three to six giants in each of the clusters NGC 2141, 2158, 2204, 2243, 2420, and 2506, which yield cluster mean velocities good to about 15 km/s.
Eileen D. Friel
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The Distribution of Open Clusters in the Galaxy [PDF]
Frontiers in Astronomy and Space Sciences, 2021 In this work we explore the new catalog of galactic open clusters that became available recently, containing 1,750 clusters that have been re-analyzed using the Gaia DR2 catalog to determine the stellar memberships. We used the young open clusters as tracers of spiral arms and determined the spiral pattern rotation speed of the Galaxy and the ...
Douglas A. Barros +3 more
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A Review of National and International Online Medical Systems [PDF]
Modern Medicine, 2020 Health and the access to medical services are key factors in the functioning of a sustainable society. In order to provide access to medical and health services, in the conditions of digitalization and implementation of ITC technologies, it is necessary ...
Carmen Catalina RUSU +3 more
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Developing an Innovative Web-Based Application for Clusterization in Healthcare - SANINFO [PDF]
Modern Medicine, 2020 The Health Information System is widely used in healthcare contexts and has improved the performance, state, and effectiveness of health services and the overall patient well-being.
Viorica BADEA +3 more
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The Effect of Age on the Grouping of Open Clusters: The Primordial Group Hypothesis
Universe, 2022 The Primordial Group hypothesis states that only sufficiently young open clusters (OCs) can be multiple, and old OCs are essentially isolated. We tested this postulate through four different studies using a manual search of Gaia EDR3 and extensive ...
Juan Casado
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Effects of Astaxanthin on The Skin Color of Green Swordtail, Xyphophorus helleri [PDF]
E3S Web of Conferences, 2020 This study aimed to analyze the effects of astaxanthin in commercial feed on growth and color intensity of green swordtail fish, Xyphophorus helleri. A total of 150 green swordtail fish (Xyphophorus helleri) had an average weight of ± 2 g per fish was ...
Putra Dedi F. +3 more
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Analysis of the Open Cluster NGC 2281
Galaxies, 2021 BV observations of an approximately 68′×48′ field centered on the open cluster NGC 2281 and covering more than 400 nights from 2013 to 2018 are presented.
Dirk Terrell +2 more
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Eclipsing Binaries in Open Clusters [PDF]
Astrophysics and Space Science, 2006 AbstractDetached eclipsing binaries are very useful objects for calibrating theoretical stellar models and checking their predictions. Detached eclipsing binaries in open clusters are particularly important because of the additional constraints on their age and chemical composition from their membership of the cluster.
Barry Smalley +2 more
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