The unusual cluster Terzan 5

Peering through the thick dust clouds of the galactic bulge an international team of astronomers has revealed the unusual mix of stars in the stellar cluster known as Terzan 5. The new results indicate that Terzan 5 is in fact one of the bulge's primordial building blocks, most likely the relic of the very early days of the Milky Way.

This picture is from the Multi-Conjugate Adaptive Optics Demonstrator (MAD), a prototype adaptive optics system used to demonstrate the feasibility of different techniques in the framework of the E-ELT and the second generation VLT Instruments. The star colours are from the Hubble image of the same star field.

Credit:

ESO/F. Ferraro

About the Image

Id:eso1630a
Type:Observation
Release date:7 September 2016, 16:00
Related releases:eso1630
Size:1142 x 671 px

About the Object

Name:Terzan 5
Type:Milky Way : Star : Grouping : Cluster : Open
Constellation:Sagittarius
Category:Star Clusters

Image Formats

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Coordinates

Position (RA):17 48 4.85
Position (Dec):-24° 46' 55.54"
Field of view:0.95 x 0.56 arcminutes
Orientation:North is 90.2° left of vertical

Colours & filters

BandWavelengthTelescope
Optical
V
606 nmHubble Space Telescope
ACS
Optical
I
814 nmHubble Space Telescope
ACS
Infrared
K
Very Large Telescope
MAD

 

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