open cluster

Noun

Meaning

open cluster (plural open clusters)

(astronomy) a more or less irregular star cluster containing tens to thousands of stars

Source: en.wiktionary.org

Synonyms

hyades pulsar

Examples

Around 15 light-years in diameter, it is located 3700 light-years away from Earth, citation and has been dated to around 2.2 billion years old. citation NGC 2362 is a small, compact open cluster, 5200 light-years from Earth. Source: Internet

By studying their abundances in open cluster stars, variables such as age and chemical composition are fixed. Source: Internet

Because of their high density, close encounters between stars in an open cluster are common. Source: Internet

Berkeley 90 is a smaller open cluster, with a diameter of 5 arcminutes. Source: Internet

Collinder 421 is a particularly old open cluster at an age of approximately 1 billion years; it is of magnitude 10.1. 3100 light-years from Earth, more than 30 stars are visible in a diameter of 8 arcseconds. Source: Internet

Dolidze 11 is an open cluster 400 million years old, farthest away of the three at 3700 light-years. Source: Internet

Close letter words and terms

open classroom open classroom school open clothes open comedo open comedone open communion