The globular star cluster Messier 54

This image from the VLT Survey Telescope at ESO’s Paranal Observatory in northern Chile shows the globular cluster Messier 54. This cluster looks very similar to many others, but it has a secret. Messier 54 doesn’t belong to the Milky Way, but actually is part of a small satellite galaxy, the Sagittarius Dwarf Galaxy. This unusual parentage has allowed astronomers to use the Very Large Telescope (VLT) to test whether unexpectedly low levels of the element lithium in stars are also found in  stars outside the Milky Way.

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ESO

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Auðkenni:eso1428a
Tegund:Athuganir
Útgáfudagur:Sep 10, 2014, 12:00 CEST
Tengdar fréttatilkynningar:eso1428
Stærð:17208 x 16310 px

Um fyrirbærið

Nafn:M 54
Tegund:Local Universe : Star : Grouping : Cluster : Globular
Fjarlægð:90000 ljósár
Constellation:Sagittarius
Flokkur:Star Clusters

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Position (RA):18 55 3.58
Position (Dec):-30° 28' 32.64"
Field of view:61.39 x 58.18 arcminutes
Stefna:Norður er 0.1° vinstri frá lóðréttu

Litir og síur

TíðnisviðSjónauki
Útfjólublátt
u
VLT Survey Telescope
OmegaCAM
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g
VLT Survey Telescope
OmegaCAM
Sýnilegt
r
VLT Survey Telescope
OmegaCAM

 

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