ROSAT X-ray Images of Young Stellar Clusters
Below are several images made from ROSAT observations that have
been used to study the X-ray emission from young stars.
Some of these are simple count rate images, where the pixel
intensity is given by the number of photons detected in this pixel.
Some, which are labeled as `true colour' images, consist
of three overlaid images showing different photon energies.
Photons with energies < 0.5 keV are shown in red,
photons with energies > 0.5 Kev and < 1.0 keV in green,
and those with energies > 1 keV in blue.
The different colours of the stars correspond to different coronal temperatures.
The young stellar cluster IC348
The Orion nebula cluster
The Rho Ophiuchus star forming region
The Chameleon star forming region
The young stellar cluster IC2391
The young stellar cluster NGC2516
These images were taken with permission from Dr. Thomas Preibisch, Astronomisches Institut, Würzburg, Germany.
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