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.

Oikeudet:

ESO/F. Ferraro

Kuvasta

Tunnistus:eso0945a
Tyyppi:Havainto
Julkaisupäivä:25. marraskuuta 2009 12:00
Vastaavat julkaisut:eso0945
Koko:1355 x 1373 px

Kohteesta

Nimi:Terzan 5
Tyyppi:Milky Way : Star : Grouping : Cluster
Etäisyys:25000 valovuotta
Constellation:Sagittarius
Kategoria:Star Clusters

Kuvaformaatit

Suuri JPEG
464,5 KB
Kokoruudun JPEG
245,8 KB

Taustakuvat

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

Koordinaatit

Position (RA):17 48 4.43
Position (Dec):-24° 46' 48.24"
Field of view:0.63 x 0.64 arcminutes
Suuntaus:Pohjoinen on 179.8° oikea pystysuuntaan nähden

Värit ja suotimet

KaistaAallonpituusTeleskooppi
Infrapuna
J
1.1 μmVery Large Telescope
MAD
Infrapuna
Pseudogreen (J+K)
Very Large Telescope
MAD
Infrapuna
K
2.2 μmVery Large Telescope
MAD

 

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