Groups of galaxies are in many respects galaxy clusters scaled tosmaller sizes, but the essential differences that are found giveimportant clues to the state and evolution of the intracluster mediumin clusters and groups. Groups may have experienced some major gasloss and seem to have a stronger enrichment by alpha-elements incomparison to clusters. To better understand and evaluate these effectswe need to get better data on the temperature structure and metallicitygradients of groups. For the study we have selected one of the most X-rayluminous groups dominated by an elliptical galaxy.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2003-01-05T03:51:23Z/2003-01-05T13:11:53Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Dr Bernd Aschenbach, 2004, 'Detailed Study an X-ray Luminous Galaxy Group', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-9d7soek
