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.

Kredit:

ESO/F. Ferraro

O snímku

Id:eso0945a
Typ:Pozorování
Datum zveřejnění:25. listopadu 2009 12:00
Související články:eso0945
Velikost:1355 x 1373 px

O objektu

Jméno:Terzan 5
Typ:Milky Way : Star : Grouping : Cluster
Vzdálenost:25000 světelné roky
Constellation:Sagittarius
Kategorie:Star Clusters

Image Formats

největší JPEG
464,5 KB

Pozadí

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

Souřadnice

Position (RA):17 48 4.43
Position (Dec):-24° 46' 48.24"
Field of view:0.63 x 0.64 arcminutes
Orientace:Sever je 179.8° pravá od svislé osy

Barvy & filtry

PásmoVlnová délkaDalekohled
Infračervený
J
1.1 μmVery Large Telescope
MAD
Infračervený
Pseudogreen (J+K)
Very Large Telescope
MAD
Infračervený
K
2.2 μmVery Large Telescope
MAD

 

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