More Images of NGC 1637
X-ray Images of NGC 1637
A series of 7 individual Chandra observations of the spiral galaxy
NGC 1637 has provided a dramatic view of a violent, restless nature.
The days listed under the images are the number of days the Chandra
observation occurred after the discovery of SN 1999em on October
29, 1999. The bright X-ray source located east (right) of the center
of the galaxy is the black hole candidate. Most X-ray sources vary
dramatically during the period covered by the Chandra observations.
(The apparent variability of the diffuse emission is an artifact
caused by the different sensitivities of the individual observations.)
View the animation
Image is 8.5 arcmin per side
(Credit: NASA/CXC/Penn State/S. Immler et
Merged Chandra X-ray
Image of NGC 1637, Full Field
This X-ray image of the spiral galaxy NGC 1637 contains the data from
7 different observations made with the Chandra X-ray Observatory.
This combined image clearly shows the black hole candidate, Supernova
1999em, and the diffuse emission around the central source. Note that
this merged Chandra image captures a slightly larger field-of-view
than is shown in the individual observations above.
Image is 14 arcmin per side
State/S. Immler et al.)
NOAO Optical Image
of NGC 1637
This visible-light image was obtained on October 30, 1999, right after
the discovery of Supernova 1999em, which is visible as a bright white
source south-west of the nucleus of the galaxy. The telescope used
for this observation was the 0.9-meter at the Cerro Tololo Inter-American
Observatory in Chile. In this image, north is up, and east is to the
Scale: Image is 8.5 arcmin
(Credit: NOAO/AURA/NSF/N. Suntzeff)
of NGC 1637
This composite image contains both X-ray data from Chandra and optical
data taken at the Cerro Tololo Inter-American Observatory in Chile.
Optically, the galaxy NGC 1637 is a stately spiral lit by the glow
of about fifty billion stars slowly evolving over millions and billions
(Credits: X-ray: NASA/CXC/Penn State/S. Immler
et al.; Optical: NOAO/AURA/NSF/N. Suntzeff)
Hubble Optical Image
of NGC 1637, Close-Up
This visible-light image of NGC 1637 was produced by combining the
data from 36 individual observations made with the Hubble Space Telescope
between September 2, 2001 and October 31, 2001, roughly two years
after the explosion of SN 1999em. The images were made with the Wide
Field and Planetary Camera 2. In this image, north is up, and east
is to the left.
Scale: 2.6 arc-min along the 2 longest sides
(Credit: NASA/STScI/UMass/D. Leonard et al.)
Return to NGC 1637 (28 Oct 03)
Chandra X-ray Image with Scale Bar
Scale bar = 2 arcmin
Credit: NASA/CXC/Penn State/S. Immler et al.