NGC 5866
Template:Short description Template:Use dmy dates Template:Infobox Galaxy
NGC 5866 (also called the Spindle Galaxy or possibly Messier 102) is a lenticular galaxy in the constellation Draco. NGC 5866 was most likely discovered by Pierre Méchain or Charles Messier in 1781, and independently found by William Herschel in 1788. Measured orbital velocities of its globular cluster system<ref>Template:Cite journal</ref> imply that dark matter makes up only Template:Value of the mass within 5 effective radii, a notable paucity.
Dust laneEdit
One of the most outstanding features of NGC 5866 is the extended dust disk, which is seen almost exactly edge-on.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> This dust lane is highly unusual for a lenticular galaxy. The dust in most lenticular galaxies is generally found only near the nucleus and generally follows the light profile of the galaxies' bulges.<ref name="bendoetal2002">Template:Cite journal</ref><ref name="xilourisetal2002">Template:Cite journal</ref> This dust disk may contain a ring-like structure, although the shape of this structure is difficult to determine given the edge-on orientation of the galaxy.<ref name="xilourisetal2002" /> It is also possible that the galaxy is a spiral galaxy that was misclassified as a lenticular galaxy because of its edge-on orientation, in which case the dust lane would not be too unusual.<ref name="bendoetal2002" />
Galaxy group informationEdit
NGC 5866 is one of the brightest galaxies in the NGC 5866 Group, a small galaxy group that also includes the spiral galaxies NGC 5879 and NGC 5907.<ref name="nbg">Template:Cite book</ref><ref name="garcia1993">Template:Cite journal</ref><ref name="giuricinetal2002">Template:Cite journal</ref> This group may actually be a subclump at the northwest end of a large, elongated structure that comprises the M51 Group and the M101 Group, although most sources distinguish the three groups as separate entities.<ref name="ferrareseetal00">Template:Cite journal</ref>
See alsoEdit
- List of Messier objects
- NGC 3115 – another lenticular galaxy referred to as the Spindle Galaxy
- NGC 4710 – another lenticular galaxy viewed edge-on
ReferencesEdit
External linksEdit
Template:Sister project Template:WikiSky
Template:Messier objects Template:Ngc60 Template:Draco (constellation) Template:Sky