The star cluster Terzan 5

Eso_eso0945a_1024

eso_eso0945a November 25th, 2009

Credit: ESO/F. Ferraro

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.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso0945a/

Curator: European Southern Observatory, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details Image Details

Image Type
Observation
Object Name
Terzan 5
Subject - Milky Way
Star > Grouping > Cluster
Eso_eso0945a_128
 

Position Details Position Details

Position (ICRS)
RA = 17h 48m 4.4s
DEC = -24° 46’ 48.2”
Orientation
North is 179.8° CW
Field of View
0.6 x 0.6 arcminutes
Constellation
Sagittarius

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Red VLT (ESO Multi-conjugate Adaptive optics Demonstrator (MAD)) Infrared (K) -
Green VLT (ESO Multi-conjugate Adaptive optics Demonstrator (MAD)) Infrared (Pseudogreen (J+K)) -
Blue VLT (ESO Multi-conjugate Adaptive optics Demonstrator (MAD)) Infrared (J) -
Eso_eso0945a_1280
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ID
eso0945a
Subject Category
B.3.6.4  
Subject Name
Terzan 5
Credits
ESO/F. Ferraro
Release Date
2009-11-25T12:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso0945a/
Type
Observation
Image Quality
Distance Notes
Distance in light years from the Max-Planck-Institute. (http://www.mpe.mpg.de/SPIFFI/preprints/first_result_an1.pdf)
Facility
Very Large Telescope, Very Large Telescope, Very Large Telescope
Instrument
ESO Multi-conjugate Adaptive optics Demonstrator (MAD), ESO Multi-conjugate Adaptive optics Demonstrator (MAD), ESO Multi-conjugate Adaptive optics Demonstrator (MAD)
Color Assignment
Red, Green, Blue
Band
Infrared, Infrared, Infrared
Bandpass
K, Pseudogreen (J+K), J
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
267.018475384, -24.7800669367
Reference Dimension
1355.0, 1373.0
Reference Pixel
569.18706178, 712.369306749
Scale
-7.76028e-06, 7.76028e-06
Rotation
-179.83937530639
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
http://www.eso.org/
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
eso0945a
Metadata Date
2009-11-24T15:20:02+01:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.

 

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