|Title||Hot Gas Halos in Field Ellipticals|
|Author||Dr John Mulchaey|
|Description||Recent Chandra and XMM-Newton observations show that a large fraction of early-type galaxies in groups and clusters retain hot gas halos. However, the properties of these halos are consistent with the idea that the amount of hot gas has been reduced by environmental effects like ram-pressure stripping and evaporation in some cases. To quantify the importance of such mechanisms, we need to compare the properties of ellipticals in rich environments to those in the field where these mechanisms are not expected to be important. Many optically-luminous field galaxies have now been observed with Chandra. XMM-Newton observations are needed to extend the study of the hot gas content of field galaxies to lower luminosity systems.|
|Publication||Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
A new, clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies . Earnshaw, H. P., Roberts, T. P., et all. . MNRAS . 483-5554 . 2019 . 2019MNRAS.483.5554E ,
|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, 2012-05-11T00:00:00Z, 065146, 17.56_20190403_1200. https://doi.org/10.5270/esa-un9cj7y|