Occasionally, as in the 5044 galaxy group, the hierarchical process of galaxyformation results in a single, centrally located dominant giant ellipticalsurrounded by unmerged dwarf galaxies. The integrated Type II and Ia supernovaactivity in the 5044 group dwarf galaxies is recorded in the abundances of Fe,Si, and S in the hot intragroup gas which can be measured with novel precisionusing XMM. The history of galaxy formation and evolution will then be recoveredfrom XMM data using theoretical gas dynamical models. The NGC 5044 group is ofspecial interest since, unlike rich clusters, dwarf galaxies provide most (2/3)of the optical light and hot gas enrichment.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2001-01-12T20:58:46Z/2001-01-13T03:40:35Z
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, Prof William Mathews, 2002, 'Hot Gas Enrichment by Dwarf Galaxies in the 5044 Galaxy Group', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fi76r94
