Perseus dwarf galaxy
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.
Provider: Hubble Space Telescope | ESA
Image Source: https://www.spacetelescope.org/images/heic0903b/
Curator: ESA/Hubble, Garching bei München, Germany
Image Use Policy: Creative Commons Attribution 4.0 International License
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Image Details
Position Details
Color Mapping
- 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.)
- Release Date
- 2009-03-12T14:00:00
- Lightyears
- Redshift
- Reference Url
- https://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
- 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
- Resource URL
- http://www.spacetelescope.org/static/archives/images/original/heic0903b.tif
- Related Resources
- Metadata Date
- 2009-03-09T11:13:58-04:00
- Metadata Version
- 1.1
Detailed color mapping information coming soon...
