|Title||The formation mechanism of bright isolated elliptical galaxies|
|Author||Dr Ewan O.Sullivan|
|Description||It is as yet unclear what processes govern the formation of ellipticals in the lowest density environments. While low luminosity ellipticals may form through the merger of isolated pairs of spiral galaxies, the only models advanced for forming bright ellipticals in these environments are monolithic collapse or the complete merger of all major galaxies in a group. A small number of such ..fossil. groups have been identified. We propose to determine whether fossil groups make up the majority of the population of luminous isolated ellipticals by observing an optically selected sample of 3 such galaxies, to ascertain whether their X-ray properties are those of groups or individual galaxies.|
|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, 2007-05-04T00:00:00Z, 030265, 17.56_20190403_1200. https://doi.org/10.5270/esa-n6q46ej|