open cluster


Also found in: Dictionary, Wikipedia.

open cluster:

see star clusterstar cluster,
a group of stars near each other in space and resembling each other in certain characteristics that suggest a common origin for the group. Stars in the same cluster move at the same rate and in the same direction.
..... Click the link for more information.
.

open cluster

(galactic cluster) A loose cluster of stars that contains at most a few thousand stars and sometimes fewer than twenty. Examples visible to the naked eye are the Hyades and the Pleiades. About 1200 open clusters are known. They are population I systems and occur in or close to the plane of the Galaxy. The brightest stars in an open cluster can be either red or blue giants, depending upon its age. Stars in the older clusters, such as M67 in Cancer, are similar in appearance to those in globular clusters, although with some subtle differences due to the higher metal content of the material from which they were formed. Open clusters are more loosely bound systems than globular clusters and they tend to be gradually dispersed by the combined effects of the differential rotation of the Galaxy and perturbations due to close encounters with interstellar clouds. Calculations suggest that many will not survive more than one or two circuits of the Galaxy. Hence most open clusters are comparatively young systems. Some, such as NGC 2264, are less than 10 million years old and in these clusters star-formation is probably still taking place (see OB cluster). See also Hertzsprung–Russell diagram; moving cluster; turnoff point.

open cluster

[′ō·pən ′kləs·tər]
(astronomy)
One of the groupings of stars that are concentrated along the central plane of the Milky Way; most have an asymmetrical appearance and are loosely assembled, and the stars are concentrated in their central region; they may contain from a dozen to many hundreds of stars. Also known as galactic cluster.
References in periodicals archive ?
The Open Cluster Cloud Series is designed specifically for enterprises that provide cloud services or wish to leverage cloud technology in their own datacenters," said Eren Niazi, CEO of Open Source Storage.
7 is the large open cluster NGC 752, which has around sixty members.
Star clusters can either be a group of stars bound together by gravity that soon exit out of the cluster, called open clusters, while other clusters contain groups of ancient stars, called globular clusters.
Our galaxy contains more than 1,000 of these open clusters, which potentially can present the physical conditions for harbouring many more of these giant planets," Perez said.
Like an astronomical tourist, I was guided across the sky: the Orion nebula, that cloudy, star-forming region in the middle of the sword of the constellation; the double cluster in Perseus; Saturn; the furry glow around the aptly named Eskimo in the Gemini constellation; the open cluster of the Pleiades.
I think NetApp's been tracking VI for a while and the next generation open cluster interconnect is really interesting, because from our perspective it enables us to combine all of the performance advantages of direct connect storage with all of the flexibility and data sharing and maintainability advantages of file access protocol where we have been specializing.
indicate that many of the blue stragglers in the open cluster M67 do have a distant companion.
2, the world's leading open source operating system, and Platform Computing's cluster software framework, Platform Open Cluster Stack 5.
The open cluster IC 4756, which is just one degree south of the borderline with Ophiuchus is situated in a very rich star field.
March 12, 2014 /PRNewswire/ -- Open Source Storage (OSS), the visionaries and creators of enterprise data storage solutions, today released the Open Cluster ZX, a storage solution designed to mount to any data infrastructure and reduce typical storage costs by 30%.
Also just visible to the naked eye from a really dark site is M34, another open cluster that lies just within the borders of Perseus.
Just above and to the right is the Pleiades cluster also known as the seven sisters, this open cluster looks very much like a mini version of the plough to the naked eye and is very easy to spot.

Full browser ?