Any understanding of the evolution of groups and their members, which ultimatelymeans the evolution of all galaxies, cannot be complete without detailed studiesat X-ray wavelengths, that probe the properties of the IGM and the interplaybetween galaxies, ISM and IGM. We propose here to observe two groups, NGC 4756and NGC 5328, selected because representative of two accretion scenarios, henceof different evolutionary paths. We aim at determining 1) the role of the hotIGM in regulating star-formation and 2) quantifying when and how sub-structuresand early-type members evolve their own X-ray halo.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2007-01-31T18:06:50Z/2007-02-01T01:51:16Z
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 Ginevra Trinchieri, 2008, 'Early-type galaxy evolution in groups: NGC 4756 and NGC 5328', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-c2o2gv3
