Knots and bursts

Esahubble_potw1838a_1024

esahubble_potw1838a September 17th, 2018

Credit: ESA/Hubble & NASA

In the northern constellation of Coma Berenices (Berenice's Hair) lies the impressive Coma Cluster a structure of over a thousand galaxies bound together by gravity. Many of these galaxies are elliptical types, as is the brighter of the two galaxies dominating this image: NGC 4860 (centre). However, the outskirts of the cluster also host younger spiral galaxies that proudly display their swirling arms. Again, this image shows a wonderful example of such a galaxy in the shape of the beautiful NGC 4858, which can be seen to the left of its bright neighbour and which stands out on account of its unusual, tangled, fiery appearance. NGC 4858 is special. Rather than being a simple spiral, it is something called a galaxy aggregate, which is, just as the name suggests, a central galaxy surrounded by a handful of luminous knots of material that seem to stem from it, extending and tearing away and adding to or altering its overall structure. It is also experiencing an extremely high rate of star formation, possibly triggered by an earlier interaction with another galaxy. As we see it, NGC 4858 is forming stars so frantically that it will use up all of its gas long before it reaches the end of its life. The colour of its bright knots indicates that they are formed of hydrogen, which glows in various shades of bright red as it is energised by the many young, hot stars lurking within. This scene was captured by the NASA/ESA Hubble Space Telescopes Wide Field Camera 3 (WFC3), a powerful camera designed to explore the evolution of stars and galaxies in the early Universe.

Image Source: https://www.spacetelescope.org/images/potw1838a/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 4858 NGC 4860
Subject - Local Universe
Galaxy > Type > Spiral
Galaxy > Type > Elliptical
Galaxy > Grouping > Cluster
Esahubble_potw1838a_128
 

Position Details

Position (ICRS)
RA = 12h 59m 3.7s
DEC = 28° 7’ 36.5”
Orientation
North is 111.0° CW
Field of View
2.6 x 2.0 arcminutes
Constellation
Coma Berenices

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_red Hubble Space Telescope (WFC3) Optical (very broad) 600.0 nm
Arrow_left_green Hubble Space Telescope (WFC3) Optical (very broad) 600.0 nm
Arrow_left_green Hubble Space Telescope (WFC3) Optical (very broad) 350.0 nm
Arrow_left_blue Hubble Space Telescope (WFC3) Optical (very broad) 350.0 nm
Spectrum_base
Arrow_top_red
Arrow_top_green
Arrow_top_green
Arrow_top_blue
Esahubble_potw1838a_1280
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ID
potw1838a
Subject Category
C.5.1.1   C.5.1.4   C.5.5.3  
Subject Name
NGC 4858, NGC 4860
Credits
ESA/Hubble & NASA
Release Date
2018-09-17T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw1838a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3
Color Assignment
Red, Green, Green, Blue
Band
Optical, Optical, Optical, Optical
Bandpass
very broad, very broad, very broad, very broad
Central Wavelength
600, 600, 350, 350
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
194.765590937, 28.126814608
Reference Dimension
4014.0, 2986.0
Reference Pixel
2007.0, 1493.0
Scale
-1.10001452912e-05, 1.10001452912e-05
Rotation
-111
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
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw1838a
Metadata Date
2018-07-23T10:35:56+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.