field galaxy


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field galaxy

Any galaxy that is not a member of a cluster of galaxies. Field galaxies are rare: the ratio of field galaxies to cluster galaxies is extremely uncertain, estimates ranging from 1:6 to essentially zero.

field galaxy

[′fēld ‚gal·ik·sē]
(astronomy)
An isolated galaxy that does not belong to a cluster.
References in periodicals archive ?
It's a field galaxy, meaning that it doesn't belong to any cluster.
Email your answer - marking the subject field Galaxy S4 Comp - to sport@people.co.uk, remembering to include your name and daytime telephone number.
The sloan digital sky survey (sdss) and the Two-Degree Field Galaxy Redshift Survey (2dFGRS) both have mapped hundreds of thousands of galaxies across enormous volumes of space.
The SDSS isn't alone; other surveys have measured large numbers of galaxy distances, most notably the Two Degree Field Galaxy Redshift Survey, or 2dFGRS (S&T: February 2003, page 32).
But now all these earlier surveys have been eclipsed by the Two Degree Field Galaxy Redshift Survey (2dFGRS).