[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki19\/ngc-2903-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki19\/ngc-2903-wikipedia\/","headline":"NGC 2903 – Wikipedia","name":"NGC 2903 – Wikipedia","description":"From Wikipedia, the free encyclopedia Isolated barred spiral galaxy in the constellation Leo NGC 2903 is an isolated barred spiral","datePublished":"2019-05-05","dateModified":"2019-05-05","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki19\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki19\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/4\/4a\/Commons-logo.svg\/30px-Commons-logo.svg.png","url":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/4\/4a\/Commons-logo.svg\/30px-Commons-logo.svg.png","height":"40","width":"30"},"url":"https:\/\/wiki.edu.vn\/en\/wiki19\/ngc-2903-wikipedia\/","about":["Wiki"],"wordCount":3749,"articleBody":"From Wikipedia, the free encyclopediaIsolated barred spiral galaxy in the constellation LeoNGC 2903 is an isolated barred spiral galaxy in the equatorial constellation of Leo, positioned about 1.5\u00b0 due south of Lambda Leonis.[10] It was discovered by German-born astronomer William Herschel, who cataloged it on November 16, 1784. He mistook it as a double nebula, as did subsequent observers, and it wasn’t until the nineteenth century that the Third Earl of Rosse resolved into a spiral form.[5]J. L. E. Dreyer assigned it the identifiers 2903 and 2905 in his New General Catalogue; NGC 2905 now designates a luminous knot in the northeastern spiral arm.[11]This field galaxy[12] is located about 30[3]\u00a0million light-years away from the Milky Way, and is a member of the Virgo Supercluster.[4] The morphological classification of this galaxy is SBbc,[6] indicating a barred spiral (SB) with moderate to tightly-wound spiral arms (bc). De Vaucouleurs and associates assigned it the class SAB(rs)bc, suggesting a weaker bar structure (SAB) with a partial ring (rs). The bar structure appears stronger in the near infrared band. The galaxy as a whole is inclined by an angle of 60\u00b0 to the line of sight from the Earth.[7]72% of the stellar mass is located in the outer disk of the galaxy, and 20% is found in the bar. The bulge adds 5% of the stellar mass, and its star population is generally older.[13] However, the central ~650\u00a0pc radius volume of the core is a strong starburst region. The star formation rate here is 0.7\u00a0M\u2609\u00a0y\u22121 and it is being fed by gas inflow along the bar. There is no evidence of an active nucleus.[7]The irregular dwarf galaxy KKH 51 appears to be a companion, as they have an angular separation of 25\u2032 and nearly the same radial velocity.[14]References[edit]^ a b Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). “The Two Micron All Sky Survey (2MASS)”. The Astronomical Journal. 131 (2): 1163\u20131183. Bibcode:2006AJ….131.1163S. doi:10.1086\/498708. ISSN\u00a00004-6256. S2CID\u00a018913331.^ a b “NASA\/IPAC Extragalactic Database”. Results for NGC 2903. Retrieved 2006-11-25.^ a b Tully, R. Brent;  et\u00a0al. (August 2016). “Cosmicflows-3”. The Astronomical Journal. 152 (2): 21. arXiv:1605.01765. Bibcode:2016AJ….152…50T. doi:10.3847\/0004-6256\/152\/2\/50. S2CID\u00a0250737862. 50.^ a b “Nearby Groups of Galaxies”. ned.ipac.caltech.edu. Retrieved 2018-05-03.^ a b O’Meara, Stephen James (2007). Hidden treasures. Cambridge University Press. p.\u00a0256. ISBN\u00a09780521837040.^ a b Ann, H. B.;  et\u00a0al. (2015). “A Catalog of Visually Classified Galaxies in the Local (z \u223c 0.01) Universe”. The Astrophysical Journal Supplement Series. 217 (2): 27\u201349. arXiv:1502.03545. Bibcode:2015ApJS..217…27A. doi:10.1088\/0067-0049\/217\/2\/27. S2CID\u00a0119253507.^ a b c Yukita, Mihoko;  et\u00a0al. (October 2012). “Hot Diffuse Emission in the Nuclear Starburst Region of NGC 2903”. The Astrophysical Journal. 758 (2): 17. arXiv:1209.5443. Bibcode:2012ApJ…758..105Y. doi:10.1088\/0004-637X\/758\/2\/105. S2CID\u00a0119197597. 105.^ Paturel, G.;  et\u00a0al. (December 2003). “HYPERLEDA. I. Identification and designation of galaxies”. Astronomy and Astrophysics. 412: 45\u201355. Bibcode:2003A&A…412…45P. doi:10.1051\/0004-6361:20031411.^ “NGC 2903”. SIMBAD. Centre de donn\u00e9es astronomiques de Strasbourg. Retrieved 2020-09-14.^ Sinnott, Roger W.; Perryman, Michael A. C. (1997). Millennium Star Atlas. Vol.\u00a02. Sky Publishing Corporation and the European Space Agency. p.\u00a0686. ISBN\u00a00-933346-83-2.^ Moore, S. L.;  et\u00a0al. (April 2010). “NGC 2903 – the galaxy Messier missed”. Journal of the British Astronomical Association. 120 (2): 106\u2013107. Bibcode:2010JBAA..120..106M.^ Materne, J. (April 1979). “The structure of nearby groups of galaxies – Quantitative membership probabilities”. Astronomy and Astrophysics. 74 (2): 235\u2013243. Bibcode:1979A&A….74..235M.^ Carrillo, Andreia;  et\u00a0al. (April 2020). “The VIRUS-P Exploration of Nearby Galaxies (VENGA): the stellar populations and assembly of NGC 2903’s bulge, bar, and outer disc”. Monthly Notices of the Royal Astronomical Society. 493 (3): 4094\u20134106. arXiv:2002.02858. Bibcode:2020MNRAS.493.4094C. doi:10.1093\/mnras\/staa397.^ Makarova, L. N.;  et\u00a0al. (March 2002). “Surface photometry of new nearby dwarf galaxies”. Astronomy and Astrophysics. 384: 72\u201380. arXiv:astro-ph\/0201234. Bibcode:2002A&A…384…72M. doi:10.1051\/0004-6361:20020006. S2CID\u00a014551920.External links[edit]Wikimedia Commons has media related to NGC 2903.  "},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki19\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki19\/ngc-2903-wikipedia\/#breadcrumbitem","name":"NGC 2903 – Wikipedia"}}]}]