Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004soust..43d...8w&link_type=abstract
Southern Stars. The Journal of the Royal Astronomical Society of New Zealand (ISSN 0049-1640), Vol. 43, No. 4, p. 8 - 13 (2004)
Astronomy and Astrophysics
Astronomy
Open Clusters, Ages
Scientific paper
This paper was designed for the 'armchair' astronomer who is interested in 'amateur research' by utilising the vast amount of images placed on the Internet from various places. Open star clusters are groups of stars that are physically related, bound by mutual gravitational attraction, populate a limited region of space and are all roughly at the same distance from us. We believe they originate from large cosmic gas and dust clouds within the Milky Way and the process of formation takes only a short time, so therefore all members of the cluster are of similar age. Also, as all the stars in a cluster formed from the same cloud, they are all of similar (initial) chemical composition. This 'family' of stars may be of similar birth age but their evolutionary ages differ due to the variation in their masses. High mass stars evolve much quicker than low mass stars they consume their fuel faster, have higher luminosities and die in a very short time (astronomical speaking) compared to a fractional solar mass star.
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