NGC 4638 is an edge-on lenticular galaxy located about 50 million light-years away in the constellation Virgo. NGC 4638 was discovered by astronomer William Herschel on March 15, 1784. The galaxy is a member of the Virgo Cluster.
Structure
At the center of NGC 4638, there is a small bulge. There is also an edge-on disk and a diffuse, boxy halo. The shallow surface brightness gradient of the halo is characteristic of a large spheroidal galaxy. This means that NGC 4638 has properties of both S0 and Sph galaxies.
See also
- List of NGC objects (4001–5000)
References
External links
- NGC 4638 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
