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More Images of NGC 4631
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X-ray/Ultraviolet composite NGC
4631
This image shows the spiral galaxy NGC 4631 as seen
edge-on from NASA's Chandra X-ray Observatory and
Ultraviolet Imaging Telescope (UIT). The Chandra data
(shown in blue and purple) provide the first
unambiguous evidence for a halo of hot gas surrounding
a galaxy that is very similar to our Milky Way. The
orange color in the middle of the image represents
ultraviolet radiation as observed by UIT, tracing
massive stars in the galaxy. Scientists have debated
for over 40 years whether the Milky Way has an extended
corona, or halo, of hot gas. Observations of NGC 4631
and similar galaxies provide astronomers with an
important tool in the understanding our own galactic
environment.
(Credit: X-ray:
NASA/CXC/UMass/D.Wang et al., UV: NASA/GSFC/UIT)
Scale: Image is 8.2 arcmin
on a side.
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Black-and-white optical image
This is an optical image of the spiral galaxy NGC
4631. The two boxes on this image represent the areas
covered by the X-ray/ultraviolet and the X-ray/optical
composites.
(Credit: NOAO/AURA/NSF)
Scale: Image is 8.2 arcmin
on a side.
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NGC 4631 Composite (3 panel)
This three-panel image puts the black-and-white
optical view, the X-ray/ultraviolet composite, and the
X-ray and H-alpha emission composite into context with
one another.
(Credit: Left
panel: NOAO/AURA/NSF Middle
panel: X-ray: NASA/CXC/UMass/D.Wang et al., UV:
NASA/GSFC/UIT Right panel:
X-ray: NASA/UMass/D.Wang et al., Optical:
NASA/HST/D.Wang et al.)
Scale: Central Region: 2.5
arcmin on a side.
Whole Galaxy: 8.2 arcmin on a side.
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NGC 4631 Composite (Stacked)
This image shows the black-and-white optical view, the
X-ray/ultraviolet composite, and X-ray and H-alpha
emission composite as they appear when overlaid with
one another.
(Credit: X-ray:
NASA/CXC/UMass/D.Wang et al., Optical: NASA/HST/D.Wang
et al., UV: NASA/GSFC/UIT Black&White Optical:
NOAO/AURA/NSF)
Scale: Central Region: 2.5
arcmin on a side.
Whole Galaxy: 8.2 arcmin on a side.
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NGC 4631 X-ray (Whole Field)
This Chandra image displays X-rays emitted by the
spiral galaxy NGC 4631 in the energy range of 0.3
through 7 keV.
(Credit: NASA/CXC/UMass/D.Wang
et al.)
Scale: 8.2 arcmin on a side.
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NGC 4631 X-ray (Center)
This Chandra X-ray image shows the central region of
NGC 4631 as seen in 0.3-0.9 keV range of the
electromagnetic spectrum.
(Credit: NASA/CXC/UMass/D.Wang
et al.)
Scale: 2.5 arcmin on a
side.
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Ultraviolet NGC 4631
This image shows the spiral galaxy NGC 4631 in
ultraviolet radiation by the Ultraviolet Imaging
Telescope (UIT).
(Credit: NASA/GSFC/UIT)
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Chandra X-ray Image with Scale
Bar
Scale bar = 30 arcsec
(Credit: X-ray:
NASA/CXC/UMass/D.Wang et al., Optical: NASA/HST/D.Wang
et al.)
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Return to NGC
4631 (19 Jul 01)
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