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.

Kilde:

ESO/F. Ferraro

Om bildet

ID:eso0945a
Type:Observasjon
Publiseringsdato:25. november 2009 12:00
Relaterte pressemeldinger:eso0945
Størrelse:1355 x 1373 px

Om objektet

Navn:Terzan 5
Type:Milky Way : Star : Grouping : Cluster
Avstand:25000 lysår
Constellation:Sagittarius
Kategori:Star Clusters

Bildeformater

Stor JPEG
464,5 KB
Medium JPEG
245,8 KB

Skrivebordsbakgrunner

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

Koordinater

Position (RA):17 48 4.43
Position (Dec):-24° 46' 48.24"
Field of view:0.63 x 0.64 arcminutes
Orientering:Nord er 179.8° til høyre for vertikalen

Farger og filtre

BåndBølgelengdeTeleskop
Infrarødt
J
1.1 μmVery Large Telescope
MAD
Infrarødt
Pseudogreen (J+K)
Very Large Telescope
MAD
Infrarødt
K
2.2 μmVery Large Telescope
MAD

 

Se også