Detailed measurements out to large radii have the potential of improving ourknowledge of the metal enrichment in galaxy groups and clusters, by directlyexploring most of the systems volume. While in recent years metallicitymeasurements out to R500 have been done for a sizable number of galaxy clusters,we are still missing systematic measurements at such radii for galaxy groups. Wepropose to observe a pilot sample of 4 galaxy groups to derive the abundanceprofiles out to R500. The requested observations will allow us to investigatewhether or not the lower metallicity observed for galaxy groups within 0.7R500persists at large radii or if the missing metals have been ejected to the outerregions.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2016-10-02T15:29:30Z/2017-01-31T02:11:53Z
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 Lorenzo Lovisari, 2018, 'Are galaxy groups metal-poor', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-prryi3y
