Stellar Glitter in a Field of Black

Esahubble_potw2020a_1024

esahubble_potw2020a May 18th, 2020

Credit: ESA/Hubble & NASA, E. Shaya, L. Rizzi, B. Tully, et al.

Unlike a spiral or elliptical galaxy, the galaxy KK 246 looks like glitter spilled across a black velvet sheet. KK 246, also known as ESO 461-036, is a dwarf irregular galaxy residing within the Local Void, a vast region of empty space. This lonely galaxy is the only one known for certain to reside in this enormous volume, along with 15 others that have been tentatively identified. Although the picture appears to be full of galaxies, they are actually beyond this void, and instead form part of other galaxy groups or clusters. Cosmic voids, such as this one, are the spaces within the web-like structure of the Universe wherein very few or no galaxies exist.  Adjacent to the Local Group, this region of empty space is at least 150 million light-years across. For perspective, our own Milky Way galaxy is estimated to be 150 000 light-years across, making this void immense in its nothingness.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/potw2020a/

Curator: ESA/Hubble, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details Image Details

Image Type
Observation
Object Name
ESO461-36
Subject - Local Universe
Galaxy > Type > Irregular
Galaxy > Size > Dwarf
Esahubble_potw2020a_128
 

Position Details Position Details

Position (ICRS)
RA = 20h 3m 57.3s
DEC = -31° 40’ 53.5”
Orientation
North is 114.3° CW
Field of View
2.1 x 1.8 arcminutes
Constellation
Sagittarius

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Red Hubble (WFC3) Infrared (H) 1.6 µm
Orange Hubble (WFC3) Infrared (YJ) 1.1 µm
Green Hubble (ACS) Optical (I) 814.0 nm
Blue Hubble (ACS) Optical (V) 606.0 nm
Spectrum_base
Red
Orange
Green
Blue
Esahubble_potw2020a_1280
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ID
potw2020a
Subject Category
C.5.1.6   C.5.2.2  
Subject Name
ESO461-36
Credits
ESA/Hubble & NASA, E. Shaya, L. Rizzi, B. Tully, et al.
Release Date
2020-05-18T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw2020a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, ACS, ACS
Color Assignment
Red, Orange, Green, Blue
Band
Infrared, Infrared, Optical, Optical
Bandpass
H, YJ, I, V
Central Wavelength
1600, 1100, 814, 606
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
300.988660592, -31.6815385883
Reference Dimension
2554.0, 2160.0
Reference Pixel
1277.0, 1080.0
Scale
-1.38958980948e-05, 1.38958980948e-05
Rotation
-114.33999999999995
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.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
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw2020a
Metadata Date
2020-05-14T17:01:26.397458
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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