Unbarred spiral galaxy

Unbarred spiral galaxy

An unbarred spiral galaxy is a galaxy without a central bar, or one that is not a barred spiral galaxy. It is designated with an SA in the galaxy morphological classification scheme.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Unbarred lenticular galaxy — An unbarred lenticular galaxy is a lenticular version of an unbarred spiral galaxy. They have the Hubble type of SA0 …   Wikipedia

  • Spiral galaxy — A spiral galaxy is a galaxy belonging to one of the three main classes of galaxy originally described by Edwin Hubble in his 1936 work “The Realm of the Nebulae” [cite book |last=Hubble |first=E. P. |authorlink=Edwin Hubble |title=The Realm of… …   Wikipedia

  • Barred spiral galaxy — A barred spiral galaxy is a spiral galaxy with a central bar shaped structure composed of stars. Bars are found in approximately half of all spiral galaxiescite book author=J. Binney, S. Tremaine year=1987 title=Galactic Dynamics… …   Wikipedia

  • flocculent spiral galaxy — noun a spiral galaxy with discontinuous spiral arms Syn: flocculent spiral, flocculent galaxy, flocculent Ant: grand design spiral galaxy See Also: spiral galaxy, barred spiral galaxy, intermediate spiral galaxy, unbarred spiral galaxy,… …   Wiktionary

  • Intermediate spiral galaxy — An intermediate spiral galaxy is a galaxy that is in between the classifications of a barred spiral galaxy and an unbarred spiral galaxy. It is designated as SAB in the galaxy morphological classification scheme …   Wikipedia

  • Dwarf spiral galaxy — A dwarf spiral galaxy is the dwarf version of a spiral galaxy. Dwarf galaxies are characterized as having low luminosities, small diameters (less than 5 kpc), low surface brightnesses, and low hydrogen masses.[1] The galaxies may be considered a… …   Wikipedia

  • Galaxy — This article is about the astronomical structure. For other uses, see Galaxy (disambiguation). NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light years in diameter and approximately 60 million light… …   Wikipedia

  • Galaxy groups and clusters — are the largest known gravitationally bound objects to have arisen thus far in the process of cosmic structure formation.[1] They form the densest part of the large scale structure of the universe. In models for the gravitational formation of… …   Wikipedia

  • Galaxy morphological classification — Artist s concept illustrating bulge no bulge spiral galaxies. Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance. There are several schemes in use by which galaxies… …   Wikipedia

  • Magellanic spiral — galaxies are galaxies which are classified as the type Sm (and SAm , SBm , SABm). They are galaxies with one spiral arm, and are named after their prototype, the Large Magellanic Cloud, an SBm galaxy. Contents 1 Magellanic spirals 2 Grades 3 List …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”