The Omega Centauri globular cluster and the area surveyed

Image of the Omega Centauri globular cluster from the the Digital Sky Survey (left). The image covers a region of 2.1 x 1.1 degrees on the sky, illustrating the very large extent of this cluster of stars. The right image is the ACS exposure taken with the Hubble Space Telescope which the astronomers used to detect and study the two distinct populations of hydrogen core-burning stars. The position of the ACS field with respect to the full globular cluster is shown as the red box. This field was chosen to lie in the outskirts of the cluster in order to ensure that there won't be any "crowding" problems and that there would be only one star in each FLAMES/VLT fiber.

Mynd/Myndskeið:

ESO

Um myndina

Auðkenni:eso0509a
Tegund:Háskóli
Útgáfudagur:15. mars 2005
Tengdar fréttatilkynningar:eso0509
Stærð:4364 x 2020 px

Um fyrirbærið

Nafn:NGC 5139, Omega Centauri
Tegund:Milky Way : Star : Grouping : Cluster : Globular
Fjarlægð:17000 ljósár
Flokkur:Star Clusters

Myndasnið

Stór JPEG
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Litir og síur

TíðnisviðSjónauki
SýnilegtHubble Space Telescope
ACS
Sýnilegt
B
Digitized Sky Survey 2
Sýnilegt
R
Digitized Sky Survey 2

Skýringar: The right image was captured by the Hubble Space Telescope. The left image is an excerpt from the Digital Sky Survey.