Zooming in on Star Formation

Eso_potw2106a_1024

eso_potw2106a February 8th, 2021

Credit: ESO/TIMER survey

Discovered in the year 1836 by John Herschel, NGC 6902 is a beautiful spiral galaxy located more than 130 million light-years away in the constellation of Sagittarius, the Archer. This image was taken with MUSE, the Multi Unit Spectroscopic Explorer instrument attached to one of the four 8.2-metre telescopes that make up the VLT, and shows the galaxy from a unique perspective. A zoom in towards the galaxys centre, the image shows a nuclear ring where the orange glow of intense star formation is visible. Inside this ring lies a faint and small bar of stars. Researchers found that stars within it are distributed differently depending on their age, with younger stars aligned along the bar and older stars more dispersed. These locations of the young and old stars within the central bar of NGC 6902 confirm predictions made years earlier from simulations and models. This is the first time these predictions of galactic structure were confirmed with observations thanks to the incredible spatial resolution of the MUSE instrument.

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/potw2106a/

Curator: European Southern Observatory, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 6902
Subject - Local Universe
Galaxy > Type > Spiral
Eso_potw2106a_128
 

Position Details

Position (ICRS)
RA = 20h 24m 28.2s
DEC = -43° 39’ 13.3”
Orientation
North is 0.1° CW
Field of View
1.1 x 1.1 arcminutes
Constellation
Sagittarius

Color Mapping

  Telescope Spectral Band Wavelength
Blue VLT (MUSE) Optical (B) 438.0 nm
Green VLT (MUSE) Optical (g) 475.0 nm
Yellow VLT (MUSE) Optical (r) 625.0 nm
Orange VLT (MUSE) Optical (H-alpha) 656.0 nm
Red VLT (MUSE) Optical (N II) 658.0 nm
Spectrum_base
Blue
Green
Yellow
Orange
Red
Eso_potw2106a_1280
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ID
potw2106a
Subject Category
C.5.1.1  
Subject Name
NGC 6902
Credits
ESO/TIMER survey
Release Date
2021-02-08T06:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/potw2106a/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope, Very Large Telescope, Very Large Telescope, Very Large Telescope, Very Large Telescope
Instrument
MUSE, MUSE, MUSE, MUSE, MUSE
Color Assignment
Blue, Green, Yellow, Orange, Red
Band
Optical, Optical, Optical, Optical, Optical
Bandpass
B, g, r, H-alpha, N II
Central Wavelength
438, 475, 625, 656, 658
Start Time
Integration Time
Dataset ID
None, None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
306.117385045, -43.653681203
Reference Dimension
317.0, 326.0
Reference Pixel
158.5, 163.0
Scale
-5.55468568189e-05, 5.55468568189e-05
Rotation
-0.059999999999999637
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
https://www.eso.org
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
None
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
potw2106a
Metadata Date
2021-02-03T15:29:08.691489
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.