Terzan 5

Terzan 5 is a globular cluster in the constellation Sagittarius, which originally than 10.3 kpc (about 33,600 light years ) from Earth and 2.4 kpc from the galactic center was assumed away. However, measurements from 1996, 2007 and 2009 suggest a smaller distance from our solar system. Current estimates of a distance of ( 5.9 ± 0.5 ) kpc ( ( 19000 ± 1600) Lj ) of the earth, but Terzan 5 is thus still attributed to the bulge of our galaxy.

Was discovered in 1968 by the pile Agop Terzan on photographic plates of the observatory Haute Provence in southern France, where Terzan later erroneously same bunch again "discovered" and in the original publication of 1971 as Terzan 5 and 11 published.

Unlike the vast majority of globular clusters, which consist only of a stellar population, was Terzan 5 in two waves. A population was 12 billion years ago, a younger before 6 billion years. A similar structure was previously known only from Omega Centauri.

Since studies of the VLT showed that Terzan 5 features than originally thought about a larger mass, it is assumed in connection with its complex composition thereof, that it is a remnant of a captured in the initial stage of our Milky Way dwarf galaxy.

In Terzan 5 including the date millisecond pulsar PSR J1748 fastest rotating - 2446ad were at least 20 pulsars discovered.