|Title||GALAXY EVOLUTION IN THE FIELD: DO SHELL GALAXIES HAVE DIFFUSE X-RAY EMISSION?|
|Author||Dr GINEVRA TRINCHIERI|
|Description||Shell galaxies represent the ideal class of objects to investigate galaxy evolution in the field. Although their origin has been explained in the framework of different scenarios (weak interaction, accretion, major merging events), the environment in which shell galaxies evolve is predicted to be of low density: in clusters, continuous "harassment" would destroy shells, otherwise long-lasting features able to persist for several Gyrs. In the X-ray band, we can test whether these galaxies, now in very low density environments, retain information about the richer environment in which they evolved in the form of a hot IGM. We therefore propose to observe 4 shell galaxies for which we have direct evidence of ongoing interaction and-or recent merging events.|
|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, 2005-12-04T00:00:00Z, 020078, 17.56_20190403_1200. https://doi.org/10.5270/esa-ukf8uj6|