Question Mark Galaxy,[2] Rosse's Galaxy,[2] M51a,[2] NGC 5194,[2] UGC 8493,[2] PGC 47404,[2] VV 001a,[2] VV 403,[2] Arp 85,[2] GC 3572[2]
The Whirlpool Galaxy, also known as Messier 51a (M51a) or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus.[6][7][8] It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy.[9] It is 7.22 megaparsecs (23.5 million light-years) away and 23.58 kiloparsecs (76,900 ly) in diameter.[2][10]
The galaxy and its companion, NGC 5195,[11] are easily observed by amateur astronomers, and the two galaxies may be seen with binoculars.[12] The Whirlpool Galaxy has been extensively observed by professional astronomers, who study it and its pair with NGC 5195 to understand galaxy structure (particularly structure associated with the spiral arms) and galaxy interactions. Its pair with NGC 5195 is among the most famous and relatively close interacting systems, and thus is a favorite subject of galaxy interaction models.
^
Dreyer, J. L. E. (1988). Sinnott, R. W. (ed.). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters. Sky Publishing Corporation/Cambridge University Press. ISBN 978-0-933346-51-2.
^ abcdefghijklmnopqr"NASA/IPAC Extragalactic Database". Results for NGC 5194. Retrieved December 6, 2006.
^"Messier 51 (The Whirlpool Galaxy)". 6 October 2017.
^"M51". SEDS.org.
^De Vaucouleurs, Gerard; De Vaucouleurs, Antoinette; Corwin, Herold G.; Buta, Ronald J.; Paturel, Georges; Fouque, Pascal (1991). Third Reference Catalogue of Bright Galaxies. Bibcode:1991rc3..book.....D.
^ abElmegreen, D. M.; Elmegreen, B. G. (1987). "Arm classifications for spiral galaxies". Astrophysical Journal. 314: 3–9. Bibcode:1987ApJ...314....3E. doi:10.1086/165034.
^
Arp, H. (1966). "Atlas of Peculiar Galaxies". Astrophysical Journal Supplement. 14: 1. Bibcode:1966ApJS...14....1A. doi:10.1086/190147.
^Matsushita, Satoki; Muller, Sebastien; Lim, Jeremy (9 April 2007). "Jet-disturbed molecular gas near the Seyfert 2 nucleus in M51". Astronomy & Astrophysics. 468 (A&A Letters Special Issue): L49–L52. arXiv:0704.0947. Bibcode:2007A&A...468L..49M. doi:10.1051/0004-6361:20067039. S2CID 15471799.
^"Whirlpool Galaxy: First Spiral Galaxy". Universe for Facts. Retrieved 2014-12-21.
^Garner, Rob (2017-10-06). "Messier 51 (The Whirlpool Galaxy)". NASA. Retrieved 2021-01-20.
^"M 51". Messier Objects 101.com. 2016-10-10. Archived from the original on 2016-10-28.
^Nemiroff, R.; Bonnell, J., eds. (February 24, 2013). "M51: The Whirlpool Galaxy". Astronomy Picture of the Day. NASA. Retrieved October 11, 2018.
The WhirlpoolGalaxy, also known as Messier 51a (M51a) or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus...
51b or M51b) is a dwarf galaxy that is interacting with the WhirlpoolGalaxy (also known as M51a or NGC 5194). Both galaxies are located approximately...
Retrieved January 4, 2007. See: Rosse revealed the spiral structure of WhirlpoolGalaxy (M51) at the 1845 meeting of the British Association for the Advancement...
the constellation Triangulum WhirlpoolGalaxy – Galaxy in the constellation Canes Venatici Black Eye Galaxy – Spiral galaxy in the constellation Coma Berenices...
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...
such as the Andromeda Galaxy, the Magellanic Clouds, the WhirlpoolGalaxy, and the Sombrero Galaxy. Astronomers work with numbers from certain catalogues...
galaxies List of galaxies List of largest galaxies List of galaxies with richest globular cluster systems List of nearest galaxies List of galaxies named...
megaparsecs). M63 is part of the M51 Group, a group of galaxies that also includes M51 (the 'WhirlpoolGalaxy'). In 1971, a supernova with a magnitude of 11.8...
spiral galaxy. The WhirlpoolGalaxy with its satellite NGC 5195. The Mice Galaxies. This simulation follows the collision of two spiral galaxies that harbour...
Hurricane Isabel vs. the WhirlpoolGalaxy (25 September 2003) NASA Astronomy Picture of the Day: Typhoon Rammasun vs. the Pinwheel Galaxy (17 May 2008) SpiralZoom...
much magnesium and 24 times as much silicon as the Sun. WhirlpoolGalaxy List of largest galaxies R. W. Sinnott, ed. (1988). The Complete New General Catalogue...
individual galaxies. Galaxies in this category are almost always clearly interacting sources. The most famous of these objects is the WhirlpoolGalaxy (M51;...
members include the companion galaxy to the WhirlpoolGalaxy (M51B) and the Sunflower Galaxy (M63). The table below lists galaxies that have been consistently...
brightest carbon stars. The WhirlpoolGalaxy is a spiral galaxy tilted face-on to observers on Earth, and was the first galaxy whose spiral nature was discerned...
the first planet outside our galaxy". Inverse. Retrieved 2021-11-08. Planet Song M51 ULS 1b Messier 51 WhirlpoolGalaxy, retrieved 2021-11-08 Sandhya...
anniversary, in 2005, was celebrated with a collection of images of M51 (the WhirlpoolGalaxy), and also with a section of the Eagle nebula. The 15th anniversary...
identified radio galaxy and the brightest radio source in the sky as seen in frequencies above 1 GHz Messier 51a (NGC 5194), the WhirlpoolGalaxy, one of the...
similar face-on spiral galaxy Messier 101 – a similar face-on spiral galaxyWhirlpoolGalaxy – a well-known face-on spiral galaxy R. W. Sinnott, ed. (1988)...
31 (or the Andromeda Galaxy) Messier 32 Messier 51 (or the WhirlpoolGalaxy) Messier 60 Messier 77 Messier 81 (or Bode's Galaxy) Messier 84 Messier 87...
spiral galaxy is a type of spiral galaxy without a central bar, or one that is not a barred spiral galaxy. It is designated with an SA in the galaxy morphological...
central portion of the sky in The Starry Night to represent either a spiral galaxy or a comet, photographs of which had also been published in popular media...
of arms due to bars. The spiral arms were first discovered in the WhirlpoolGalaxy (M51), in which Lord Rosse identified the spiral structure in 1850...
service rifle of the Swiss Army Messier 51, a spiral galaxy also known as the WhirlpoolGalaxy Samsung Galaxy M51, a smartphone released in 2020 This disambiguation...
SN 2011dh was a supernova in the WhirlpoolGalaxy (M51). It was discovered on 31 May 2011, with an apparent magnitude 13.5. and confirmed by several sources...
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...
NGC 406 is a spiral galaxy quite similar to the well known WhirlpoolGalaxy, located some 65 million light-years away, in the southern constellation of...
artificial sources, neither in the Milky Way nor in nearby galaxies (M33, M81, the WhirlpoolGalaxy or Centaurus A), or even in the Virgo cluster. For the...
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