Recent work find evidence of an increase of the Iron abundance in clusters withtemperatures below 5 keV, up to a value about 3 times larger than that typicalof very hot clusters. This behaviour is likely related to fundamental processesof metal production and release in low--temperature objects. Fromspatially-unresolved ASCA metallicity measurements, we select 9 clusters with Z>0.6 Z_odot . For none of these, apart from one, is possibile to recover themetal abundance profile with the available data. We aim to make proper use ofXMM-Newton to resolve spatially the metal distribution in the central regions ofthe 3 brightest objects never resolved spatially before.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2008-07-29T03:55:36Z/2008-07-29T18:45:02Z
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 Stefano Ettori, 2009, 'The case of high metallicity in low-temperature nearby galaxy clusters', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wg8u3t1
