|Title||The Origin and Distribution of Heavy Elements in the cD Groups MKW4 and AWM4|
|Author||Dr Jan M. Vrtilek|
|Description||Most galaxies in the present-day Universe are in groups and poor clusters. Groups are thought to be the building blocks from which clusters formed, and they accordingly occupy an important niche in the continuum between isolated galaxies and rich clusters. We here propose observations of the cD groups MKW 4 and AWM 4; our principal purpose is the accurate determination of the abundances of heavy elements as a function of position in the group. These observations exploit the high X-ray brightnesses of the groups and their relative sparseness to understand the overall metallicity of the intragroup gas, to test whether any abundance variations are associated with individual galaxies, and to trace the origin of the enrichment to type Ia or II SNs.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|Mission Description||The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2004-02-21T00:00:00Z, 009306, 17.56_20190403_1200. https://doi.org/10.5270/esa-bgwlrcd|