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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.
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 |
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 |
Zobrazit ve World Wide Telescope:
Barvy & filtry
| Pásmo | Vlnová délka | Dalekohled |
|---|---|---|
| Infračervený J | 1.1 μm | Very Large Telescope ESO Multi-conjugate Adaptive optics Demonstrator (MAD) |
| Infračervený Pseudogreen (J+K) | Very Large Telescope ESO Multi-conjugate Adaptive optics Demonstrator (MAD) | |
| Infračervený K | 2.2 μm | Very Large Telescope ESO Multi-conjugate Adaptive optics Demonstrator (MAD) |