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.

Credit:

ESO/F. Ferraro

Over de afbeelding

Id:eso0945a
Type:Observatie
Publicatiedatum:25 november 2009 12:00
Gerelateerde berichten:eso0945
Grootte:1355 x 1373 px

Over het object

Naam:Terzan 5
Type:Milky Way : Star : Grouping : Cluster
Afstand:25000 lichtjaren
Constellation:Sagittarius
Categorie:Star Clusters

Afbeeldingstypen

Grote JPEG
464,5 KB

Achtergrond

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

Coordinates

Position (RA):17 48 4.43
Position (Dec):-24° 46' 48.24"
Field of view:0.63 x 0.64 arcminutes
Orientation:North is 179.8° right of vertical

Kleuren & filters

BandGolflengteTelescoop
Infrarood
J
1.1 μmVery Large Telescope
MAD
Infrarood
Pseudogreen (J+K)
Very Large Telescope
MAD
Infrarood
K
2.2 μmVery Large Telescope
MAD

 

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