The unusual cluster Terzan

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.

Observations were made with the Wide Field Camera 3 (WFC3) on board the Hubble, the Multi-conjugate Adaptive Optics Demonstrator (MAD) instrument on ESO's Very Large Telescope and the second generation Near Infrared Camera at the Keck Telescope.

Credit:

NASA/ESA/Hubble/F. Ferraro

About the Image

Id:heic1617a
Type:Observation
Release date:7 September 2016, 16:00
Related releases:heic1617
Size:4002 x 1958 px

About the Object

Name:Terzan 5
Type:Milky Way : Star : Grouping : Cluster
Distance:20000 light years
Constellation:Sagittarius
Category:Star Clusters

Image Formats

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4.0 MB
Screensize JPEG
394.9 KB

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2.1 MB

Coordinates

Position (RA):17 48 4.91
Position (Dec):-24° 46' 44.61"
Field of view:3.33 x 1.63 arcminutes
Orientation:North is 89.3° left of vertical

Colours & filters

BandWavelengthTelescope
Optical
V
606 nm Hubble Space Telescope
ACS
Optical
I
814 nm Hubble Space Telescope
ACS
Optical
V
606 nm Hubble Space Telescope
ACS
Optical
I
814 nm Hubble Space Telescope
ACS
Infrared
H
1.6 μm Hubble Space Telescope
WFC3
Infrared
J
1.25 μm Hubble Space Telescope
WFC3

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