ESO 502- G 013, AM 1100-224,IRAS 11009-2248,UGCA 223,MCG -04-26-020,PGC 33385[1]
NGC 3511 is anintermediate spiral galaxy located in the constellationCrater. It is located at a distance of about 41 millionlight years from Earth, which, given its apparent dimensions, means that NGC 3511 is about 107,000 light years across. It was discovered byWilliam Herschel on December 21, 1786.[3] It lies two degrees west ofBeta Crateris.[4]
NGC 3511 features two very diffuse, thick, and patchyspiral arms that emanate from the bulge, while there are also other spiral arm fragments. Dark dust lanes can be seen across the spiral pattern. Thebulge appears elliptical and is weak.[5] The galaxy is seen at a high inclination, estimated to be 70°.[6] In the centre of the galaxy lies asupermassive black hole, whose mass is estimated to be 106.46 ± 0.33 (1.3 - 6.2 million)M☉, based on the pitch angle of the spiral arms.[7] The galaxy had been classified as a type ISeyfert galaxy,[8] however it features only narrowemission lines, and has been reclassified as aHII region galaxy.[9] The Infrared Spectrograph (IRS) on theSpitzer Space Telescope has detectedpolycyclic aromatic hydrocarbon (PAH) emission.[10]
NGC 3511 forms a pair withNGC 3513, which lies 10.5 arcminutes away from NGC 3511.[11] The two galaxies form a small group, known as the NGC 3511 group, which also includes the galaxy ESO 502-024.[12]
^Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M.; Houdashelt, Mark L.; Kuchinski, Leslie E.; Ramirez, Solange V.; Sellgren, K.; Stutz, Amelia; Terndrup, Donald M.; Tiede, Glenn P. (November 2002). "Near-Infrared and Optical Morphology of Spiral Galaxies".The Astrophysical Journal Supplement Series.143 (1):73–111.arXiv:astro-ph/0206320.Bibcode:2002ApJS..143...73E.doi:10.1086/342340.S2CID15491635.
^Davis, Benjamin L.; Berrier, Joel C.; Johns, Lucas; Shields, Douglas W.; Hartley, Matthew T.; Kennefick, Daniel; Kennefick, Julia; Seigar, Marc S.; Lacy, Claud H. S. (20 June 2014). "The Black Hole Mass Function Derived from Local Spiral Galaxies".The Astrophysical Journal.789 (2): 124.arXiv:1405.5876.Bibcode:2014ApJ...789..124D.doi:10.1088/0004-637X/789/2/124.S2CID119302157.
^Gallimore, J. F.; Yzaguirre, A.; Jakoboski, J.; Stevenosky, M. J.; Axon, D. J.; Baum, S. A.; Buchanan, C. L.; Elitzur, M.; Elvis, M.; O'Dea, C. P.; Robinson, A. (1 March 2010). "Infrared Spectral Energy Distributions of Seyfert Galaxies: Spitzer Space Telescope Observations of the 12 μm Sample of Active Galaxies".The Astrophysical Journal Supplement Series.187 (1):172–211.arXiv:1001.4974.Bibcode:2010ApJS..187..172G.doi:10.1088/0067-0049/187/1/172.S2CID119223756.
^Sandage, A., Bedke, J. (1994),The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
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