NGC 4775 is aspiral galaxy in the constellationVirgo. The galaxy lies about 55 millionlight years away from Earth, which means, given its apparent dimensions, that NGC 4775 is approximately 35,000 light years across.[1] It was discovered byWilliam Herschel on April 25, 1784.[3]
NGC 4775 has a small ellipticalgalactic bulge. The galaxy has faint and diffusespiral arms. The pattern is asymmetric, with a very open and broad arm emerging from the southeast part of the disk and can be traced for about half a revolution. The other arm is very short but brighter. No clear pattern is discernible in the inner disk.[4] There are manyHII regions in the arms of NGC 4775 the largest of which is complex and about 4 arcseconds across.[5] The nucleus hosts young stars but it is surrounded by older stars. The nucleus has highermetallicity than the rest of the galaxy.[6] In the nucleus lies anuclear star cluster which is 2.2 arcseconds across.[7]
^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.
^Sandage, A., Bedke, J. (1994),The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
