Perseus dwarf galaxy

Esahubble_heic0903b_500

esahubble_heic0903b March 12th, 2009

Credit: NASA, ESA and C. Conselice (University of Nottingham, U.K.)

This object, [CGW2003] J031931.7+4131, is one of four dwarf galaxies that is part of a census of small galaxies in the tumultuous heart of the nearby Perseus galaxy cluster. The galaxies appear smooth and symmetrical, suggesting that they have not been tidally disrupted by the pull of gravity in the dense cluster environment. Larger galaxies around them, however, are being ripped apart by the gravitational tug of other galaxies. The image, taken by NASA/ESAs Hubble Space Telescope in 2005, is an evidence that the undisturbed galaxies are enshrouded by a "cushion" of dark matter, which protects them from their rough-and-tumble neighborhood.

Image Source: http://www.spacetelescope.org/images/heic0903b/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
[CGW2003] J031931.7+4131 Perseus Cluster
Subject - Local Universe
Galaxy » Size » Dwarf
Esahubble_heic0903b_128
 

Position Details

Position (ICRS)
RA = 3h 19m 31.8s
DEC = 41° 31’ 20.4”
Orientation
North is 95.1° CW
Field of View
0.4 x 0.4 arcminutes
Constellation
Perseus

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_yellow Hubble Space Telescope (ACS) Infrared (I) 814.0 nm
Arrow_left_blue Hubble Space Telescope (ACS) Optical (V) 555.0 nm
Spectrum_base
Arrow_top_yellow
Arrow_top_blue
Esahubble_heic0903b_1280
×
ID
heic0903b
Subject Category
C.5.2.2  
Subject Name
[CGW2003] J031931.7+4131, Perseus Cluster
Credits
NASA, ESA and C. Conselice (University of Nottingham, U.K.)
Lightyears
Redshift
Reference Url
http://www.spacetelescope.org/images/heic0903b/
Type
Observation
Image Quality
Moderate
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope
Instrument
ACS, ACS
Color Assignment
Yellow, Blue
Band
Infrared, Optical
Bandpass
I, V
Central Wavelength
814, 555
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
49.8823981293, 41.5223221714
Reference Dimension
500.0, 500.0
Reference Pixel
250.0, 250.0
Scale
-1.38919928536e-05, 1.38919928536e-05
Rotation
-95.1000000000001
Coordinate System Projection:
TAN
Quality
Full
FITS Header
CRPIX1 = -1573. / x-coordinate of reference pixel CRPIX2 = -1493.5 / y-coordinate of reference pixel CRVAL1 = 49.84699793289849 / first axis value at reference pixel CRVAL2 = 41.4993576066415 / second axis value at reference pixel CTYPE1 = 'RA---TAN' / the coordinate type for the first axis CTYPE2 = 'DEC--TAN' / the coordinate type for the second axis CD1_1 = 1.210444026818441E-06 / partial of first axis coordinate w.r.t. x CD1_2 = 1.383533141097398E-05 / partial of first axis coordinate w.r.t. y CD2_1 = 1.383533141097479E-05 / partial of second axis coordinate w.r.t. x CD2_2 = -1.210444026819449E-06 / partial of second axis coordinate w.r.t. y
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.org/
Name
Z. Levay
Email
outreach@stsci.edu
Telephone
410-338-4848
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
heic0903b
Metadata Date
2009-03-09T11:13:58-04:00
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.