Messier Index/M89

Messier 89J. L. Tonry, A. Dressler, J. P. Blakeslee, E. A. Ajhar, A. B. Fletcher, G. A. Luppino, M. R. Metzger, C. B. Moore The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances Astrophysical Journal 2001 546 2 681–693 http://adsabs.harvard.edu/abs/2001ApJ...546..681T 10.1086/318301 Messier 89 on DSS2 all sky survey. w:J2000 Virgo 12 35 39.8NASA/IPAC Extragalactic Database Results for NGC 4552 http://nedwww.ipac.caltech.edu/ 2006-10-24 +12 33 23 10.73 E, w:LINER, HIISy2 NGC 4552, UGC 7760, PGC 41968 Messier 89 (M89 for short, also known as NGC 4552) is an w:elliptical galaxy in the constellation Virgo. It was discovered by w:Charles Messier on w:March 18 w:1781. M89 is a member of the Virgo Cluster of galaxies.Elliptical Galaxy M89 @ SEDS Messier pages Unusual features Current observations indicate that M89 may be nearly perfectly spherical in shape. This would be unusual as all other known elliptic galaxies are relatively elongated w:ellipsoids.February 2007 However, it is possible that the galaxy is oriented in such a way that it appears spherical to an observer on Earth but is in fact elliptical. The galaxy also features a surrounding structure of gas and dust extending up to 150,000 light-years from the galaxy and jets of heated particles that extend 100,000 light-years outwards, indications that it may have once been an active w:quasar or w:radio galaxy.Messier Objects 81-90 @ Sea and Sky M89 also has a large population of w:globular clusters as compared to the w:Milky Way's 150-200, a w:2006 survey out to 10′ of its core estimates that there are 2,000 ± 700 globulars within 25′ of M89.Tamura, Naoyuki; Sharples, Ray M.; Arimoto, Nobuo; Onodera, Masato; Ohta, Kouji; Yamada, Yoshihiko A Subaru/Suprime-Cam wide-field survey of globular cluster populations around M87 - I. Observation, data analysis and luminosity function Monthly Notices of the Royal Astronomical Society Online Early 2006 http://adsabs.harvard.edu/cgi-bin/nph-bib_query?doi=10.1111%2Fj.1365-2966.2006.11067.x 10.1111/j.1365-2966.2006.11067.x 588 References