barred spiral galaxies

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• 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

• 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

• Récession des galaxies — Galaxie  Cet article concerne les galaxies au sens général. Pour les articles homonymes, voir Galaxie (homonymie). Pour notre propre galaxie, voir Voie lactée …   Wikipédia en Français

• Antennae Galaxies — NGC 4038 (left) NGC 4039 (right) Observation data (J2000 epoch) Constellation Corvus …   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

• 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

• Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure — Timeline of galaxies, clusters of galaxies, and large scale structure of the cosmosPre 20th Century* 400s BC Democritus proposes that the bright band in the night sky known as the Milky Way might consist of stars, * 300s BC Aristotle believes the …   Wikipedia

• List of galaxies — This is a list of notable galaxies.List* 4C 37.11 * Abell 1835 IR1916 * AM 0644 741 * Andromeda Galaxy (M31/NGC 224) * Andromeda I * Antennae Galaxies (NGC 4038/NGC 4039) * Aquarius Dwarf * Arp 299 pair of colliding galaxies; has six recorded… …   Wikipedia

• Mice Galaxies — NGC 4676A / 4676B The Mice Galaxies, NGC 4676A (right)/NGC 4676B (left) Observation data (J2000 epoch) Constellation Coma Berenices …   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

• Milky Way — This article is about the galaxy. For other uses, see Milky Way (disambiguation). Milky Way galaxy Image of the Milky Way s Galactic Center in the night sky above Paranal Observatory Observation data …   Wikipedia