A spiral galaxy is a type of galaxy characterized by a central bulge of old Population II stars surrounded by a rotating disc of younger Population I stars. A spiral galaxy maintains its spirals arms due to density wave theory.
Below is a list of notable spiral galaxies with their own articles. The classification column refers to the galaxy morphological classification used by astronomers to describe galaxy structure.
|ESO 97-G13, Circinus Galaxy||S||Circinus||11|
|ESO 510-G13||Sa: pec sp||Hydra||13.4|
|IC 2163||SB(rs)c pec||Canis Major||11.6|
|IC 4970||SA0− pec||Pavo||12.7|
|LEDA 100170, Dwingeloo 1||
|M33, Triangulum Galaxy||SA(s)cd||Triangulum||6.3|
|M51a, Whirlpool Galaxy||SA(s)bc pec||Canes Venatici||9.0|
|M63, Sunflower Galaxy||SA(rs)bc||Canes Venatici||9.3|
|M64, Black Eye Galaxy||(R)SA(rs)ab||Coma Berenices||9.4|
|M99, Coma Pinwheel Galaxy||SA(s)c||Coma Berenices||10.4|
|M101, Pinwheel Galaxy||SAB(rs)cd||Ursa Major||8.3|
|M104, Sombrero Galaxy||SA(s)a||Virgo||9.0|
|NGC 253, Sculptor Galaxy||SAB(s)c||Sculptor||8.0|
|NGC 1055||SBb:II-III: spindle||Cetus||11.6|
|NGC 1532||SB(s)b pec||Eridanus||10.7|
|NGC 2207||SAB(rs)bc pec||Canis Major||12.2|
|NGC 2442||SAB(s)bc pec||Volans||11.2|
|NGC 2841||SA(r)b||Ursa Major||10.1|
|NGC 2976||SAc pec||Ursa Major||10.8|
|NGC 3079||SB(s)c||Ursa Major||11.5|
|NGC 3184||SA(s)b||Ursa Major||9.6|
|NGC 3310||SAB(r)bc pec||Ursa Major||11.2|
|NGC 3486||Sb||Leo Minor||11.0|
|NGC 3628||SAb pec||Leo||14.0|
|NGC 3877||Sc||Ursa Major||12.1|
|NGC 3949||SA(s)bc||Ursa Major||11.5|
|NGC 3953||SB(r)bc||Ursa Major||10.8|
|NGC 3982||SAB(r)b||Ursa Major||12.0|
|NGC 4013||SAb||Ursa Major||19.2|
|NGC 4088||SAB(rs)bc||Ursa Major||11.2|
|NGC 4314||SBa ||Coma Berenices|
|NGC 4395||SA(s)m||Canes Venatici||10.6|
|NGC 4414||SA(rs)c||Coma Berenices||11.0|
|NGC 4565||SA(s)b||Coma Berenices||10.42|
|NGC 4618||SB(rs)m||Canes Venatici||11.2|
|NGC 4625||SAB(rs)m pec||Canes Venatici||13.2|
|NGC 4631||SB(s)d||Canes Venatici||9.8|
|NGC 4725||SAB(r)ab pec||Coma Berenices||10.1|
|NGC 4911||Sb ||Coma Berenices||Unknown|
|NGC 5005||SAB(rs)bc||Canes Venatici||10.6|
|NGC 5033||SA(s)c||Canes Venatici||10.8|
|NGC 5091||Sb pec sp||Centaurus||13.9|
|NGC 5164||SBb||Ursa Major||14.1|
|NGC 5257||SAB(s)b pec||Virgo||12.9|
|NGC 5258||SA(s)b pec||Virgo||12.9|
|NGC 5474||SA(s)cd pec||Ursa Major||11.3|
|NGC 5713||SAB(rs)bc pec||Virgo||12.1|
|NGC 5921||SB(r)bc||Serpens Caput||11.5|
|NGC 7318||SB(s)bc pec||Pegasus||14.4 / 13.9|
|UGC 10214, Tadpole Galaxy||SB(s)c pec||Draco||14.4|
ESO 269-57 is a large spiral galaxy located about 150 million light-years away in the constellation Centaurus. ESO 269-57 has a diameter of about 200,000 light-years. It is part of group of galaxies known as GG 342.List of galaxies
The following is a list of notable galaxies.
There are about 51 galaxies in the Local Group (see list of nearest galaxies for a complete list), on the order of 100,000 in our Local Supercluster and an estimated number of about one to two trillion in all of the observable universe.
The discovery of the nature of galaxies as distinct from other nebulae (interstellar clouds) was made in the 1920s. The first attempts at systematic catalogues of galaxies were made in the 1960s, with the Catalogue of Galaxies and Clusters of Galaxies listing 29,418 galaxies and galaxy clusters, and with the Morphological Catalogue of Galaxies, a putatively complete list of galaxies with photographic magnitude above 15, listing 30,642. In the 1980s, the Lyons Groups of Galaxies listed 485 galaxy groups with 3,933 member galaxies. Galaxy Zoo is a project aiming at a more comprehensive list: launched in July 2007, it has classified over one million galaxy images from The Sloan Digital Sky Survey, The Hubble Space Telescope and the Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey.There is no universal naming convention for galaxies, as they are mostly catalogued before it is established whether the object is or isn't a galaxy. Mostly they are identified by their celestial coordinates together with the name of the observing project (HUDF, SDSS, 3C, CFHQS, NGC/IC, etc.)List of nearest galaxies
This is a list of known galaxies within 3.59 megaparsecs (11.7 million light-years) of the Solar System, in ascending order of distance.
This encompasses all of the about 50 Local Group galaxies, and some that are members of neighboring galaxy groups, the M81 Group and the Centaurus A/M83 Group, and some that are currently not in any defined galaxy group.
The list aims to reflect current knowledge: not all galaxies within the 3.59 Mpc radius have been discovered. Nearby dwarf galaxies are still being discovered, and galaxies located behind the central plane of the Milky Way are extremely difficult to discern. It is possible for any galaxy to mask another located beyond it.
Intergalactic distance measurements are subject to large uncertainties. Figures listed are composites of many measurements, some of which may have had their individual error bars tightened to the point of no longer overlapping with each other.List of spirals
This list of spirals includes named spirals that have been described mathematically.Lists of astronomical objects
This is a list of lists, grouped by type of astronomical object.Lists of galaxies
This is a list of lists of galaxies.NGC 3041
NGC 3041 is an intermediate barred spiral galaxy located in the constellation Leo. It is designated as SAB(rs)c in the galaxy morphological classification scheme. It was discovered by William Herschel on 23 March 1784. The galaxy is approximately 77 million light years away from earth.NGC 468
NGC 468 is a spiral galaxy in the constellation Pisces. With its distance being approximately 209 million lightyears from earth, it was discovered by John Frederick William Herschel in 1827.NGC 469
NGC 469 is a spiral galaxy in the constellation Pisces. With its distance being approximately 167 million light-years from Earth, it was discovered by Albert Marth in 1864.NGC 470
NGC 470 is a spiral galaxy in the constellation Pisces. Its distance being approximately 91 million lightyears from earth, it was discovered by Friedrich Wilhelm Herschel in 1784. The galaxy also weakly interacts with NGC 474.NGC 472
NGC 472 is a spiral galaxy located roughly 220 million lightyears from earth in the constellation Pisces. It was discovered on August 29, 1862 by Heinrich Louis d'Arrest.NGC 5001
NGC 5001 is a barred spiral galaxy located in the constellation Ursa major. It is designated as SB in the galaxy morphological classification scheme. It was discovered by John Herschel on 1 May 1831. It is at a distance of 130 million parsecs from the earth.NGC 681
NGC 681 (also known as the Little Sombrero Galaxy) is an intermediate spiral galaxy in the constellation of Cetus, located approximately 66.5 million light-years from Earth. The name Little Sombrero Galaxy is a reference to a much larger and earlier observed sombrero-like galaxy designated M104, or the Sombrero Galaxy.Spiral galaxy
Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, form part of the Hubble sequence. Most spiral galaxies consist of a flat, rotating disk containing stars, gas and dust, and a central concentration of stars known as the bulge. These are often surrounded by a much fainter halo of stars, many of which reside in globular clusters.
Spiral galaxies are named by their spiral structures that extend from the center into the galactic disc. The spiral arms are sites of ongoing star formation and are brighter than the surrounding disc because of the young, hot OB stars that inhabit them.
Roughly two-thirds of all spirals are observed to have an additional component in the form of a bar-like structure, extending from the central bulge, at the ends of which the spiral arms begin. The proportion of barred spirals relative to their barless cousins has likely changed over the history of the Universe, with only about 10% containing bars about 8 billion years ago, to roughly a quarter 2.5 billion years ago, until present, where over two-thirds of the galaxies in the visible universe (Hubble volume) have bars.Our own Milky Way is a barred spiral, although the bar itself is difficult to observe from the Earth's current position within the galactic disc. The most convincing evidence for the stars forming a bar in the galactic center comes from several recent surveys, including the Spitzer Space Telescope.Together with irregular galaxies, spiral galaxies make up approximately 60% of galaxies in today's universe. They are mostly found in low-density regions and are rare in the centers of galaxy clusters.