The star cluster Terzan 5

Peering through the thick dust clouds of our galaxy's central parts (the "bulge") with an amazing amount of detail, a team of astronomers has revealed an unusual mix of stars in the stellar grouping known as Terzan 5. Never observed anywhere in the bulge before, this peculiar cocktail of stars suggests that Terzan 5 is in fact one of the bulge's primordial building blocks, most likely the relic of a dwarf galaxy that merged with the Milky Way during its very early days.

This near-infrared image was obtained with the Multi-conjugate Adaptive Optics Demonstrator (MAD) instrument on ESO's Very Large Telescope. Observations in two bands (J and K) were combined. The field of view is 40 arcseconds across.

Herkunftsnachweis:

ESO/F. Ferraro

Über das Bild

ID:eso0945a
Typ:Beobachtung
Veröffentlichungsdatum:25. November 2009 12:00
Dazugehörige Veröffentlichungen:eso0945
Größe:1355 x 1373 px

Über das Objekt

Name:Terzan 5
Typ:Milky Way : Star : Grouping : Cluster
Entfernung:25000 Lichtjahre
Constellation:Sagittarius
Kategorie:Star Clusters

Bildformate

Großes JPEG
464,5 KB

Bildschirm-Hintergrundbilder

1024x768
254,9 KB
1280x1024
371,8 KB
1600x1200
464,8 KB
1920x1200
523,9 KB
2048x1536
672,1 KB

Koordinaten

Position (RA):17 48 4.43
Position (Dec):-24° 46' 48.24"
Field of view:0.63 x 0.64 arcminutes
Orientierung:Die Nordrichtung liegt 179.8° rechts zur Vertikale

Farben & Filter

SpektralbereichWellenlängeTeleskop
Infrarot
J
1.1 μmVery Large Telescope
MAD
Infrarot
Pseudogreen (J+K)
Very Large Telescope
MAD
Infrarot
K
2.2 μmVery Large Telescope
MAD

 

Siehe auch