Wolf-Lundmark-Melotte Galaxy (WLM Galaxy)
A dwarf, irregular galaxy in the
constellation Cetus that is a remote member
of the Local Group; though discovered
in 1909 by Max Wolf, its nature as a galaxy
was only established in 1926 by Knut Lundmark and Philibert Jacques Melotte
(1880–1961). Not only is WLM at the frontier of the Local Group, but
it is also very isolated – its nearest neighbor, the dwarf galaxy
IC 1613, a full million light-years away. Quite elongated, with a largest
extension of more than 8,000 light years, WLM is about 12 times smaller
than the Milky Way. Yet the discovery around it of many outlying red stars
suggests that even such galactic minnows may have haloes and that WLM may
be similar to our own galaxy in age.
| Image credit: Jonathan Irwin,
2.5m Isaac Newton Telescope
||12' × 4'
||R.A. 0h 2.0m;
Dec. -15° 28'