A Scattering of Stars

Esahubble_potw2126a_1024

esahubble_potw2126a June 28th, 2021

Credit: ESA/Hubble & NASA, J. Kalirai, A. Milone

This Picture of the Week depicts the open star cluster NGC 330, which lies around 180,000 light-years away inside the Small Magellanic Cloud. The cluster which is in the constellation Tucana (The Toucan) contains a multitude of stars, many of which are scattered across this striking image. The most stunning object in this image is actually the very small star cluster in the lower left corner of the image, surrounded by a nebula of ionised hydrogen (red) and dust (blue). Named GALFOR 1, the cluster was discovered in 2018 in Hubble's archival data, which was used to create this latest image from Hubble. To better understand this star cluster, specifically whether the nebula surrounding the cluster also contains a bow shock, scientists will need high resolution infrared imagery from the upcoming NASA/ESA/CSA James Webb Space Telescope. This image also contains clues about the inner workings of Hubble itself. The criss-cross patterns surrounding the stars in this image known as diffraction spikes were created when starlight interacted with the four thin vanes supporting Hubbles secondary mirror. As star clusters form from a single primordial cloud of gas and dust, all the stars they contain are roughly the same age. This makes them useful natural laboratories for astronomers to learn how stars form and evolve. This image uses observations from Hubbles Wide Field Camera 3, and incorporates data from two very different astronomical investigations. The first aimed to understand why stars in star clusters appear to evolve differently from stars elsewhere, a peculiarity first observed by the Hubble Space Telescope. The second aimed to determine how large stars can be before they become doomed to end their lives in cataclysmic supernova explosions. Links Video of A Scattering of Stars

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/potw2126a/

Curator: ESA/Hubble, Baltimore, MD, United States

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 330
Esahubble_potw2126a_128
 

Position Details

Position (ICRS)
RA = 0h 56m 19.7s
DEC = -72° 27’ 58.4”
Orientation
North is 28.3° CCW
Field of View
2.5 x 2.4 arcminutes
Constellation
Tucana

Color Mapping

  Telescope Spectral Band Wavelength
Red Hubble (WFC3) Optical (H-alpha) 656.0 nm
Red Hubble (WFC3) Optical (I) 814.0 nm
Green Hubble (WFC3) Optical (U) 336.0 nm
Green Hubble (WFC3) Optical (I) 814.0 nm
Cyan Hubble (WFC3) Optical (U) 336.0 nm
Blue Hubble (WFC3) Ultraviolet (UV) 225.0 nm
Spectrum_base
Red
Red
Green
Green
Cyan
Blue
Esahubble_potw2126a_1280
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ID
potw2126a
Subject Category
Subject Name
NGC 330
Credits
ESA/Hubble & NASA, J. Kalirai, A. Milone
Release Date
2021-06-28T06:00:00
Lightyears
Redshift
Reference Url
https://esahubble.org/images/potw2126a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3, WFC3, WFC3
Color Assignment
Red, Red, Green, Green, Cyan, Blue
Band
Optical, Optical, Optical, Optical, Optical, Ultraviolet
Bandpass
H-alpha, I, U, I, U, UV
Central Wavelength
656, 814, 336, 814, 336, 225
Start Time
Integration Time
Dataset ID
None, None, None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
14.082233873443839, -72.46621964354223
Reference Dimension
3865.0, 3687.0
Reference Pixel
1932.5, 1843.5
Scale
-1.099508158188572e-05, 1.099508158188572e-05
Rotation
28.260000000000076
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
https://esahubble.org
Name
Email
Telephone
Address
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr
City
Baltimore
State/Province
MD
Postal Code
21218
Country
United States
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw2126a
Metadata Date
2021-05-31T17:10:28+02:00
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.