A dataset provided by the European Space Agency

Name 001415
Title ''Fossil Groups.. in the Bright SHARC Survey
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0014150101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0014150401

DOI 10.5270/esa-fzx34ef
Author Prof Bob Nichol
Description A ''fossil group.. is the proposed end-point of the complete coalescence of a group of galaxies. It is characterised by a single, giant elliptical sitting in an extended X-ray halo and to date, a handful of such systems have been found. However, the exact nature of these systems - how the really formed, their contribution to the mass density of the universe - remains unknown. We propose here XMM EPIC observations towards three new ''fossil groups.. detected in the Bright SHARC X-ray survey. These data will allow us to address fundamental questions about this new population of objects e.g. by accurately determining the total masses of these systems and by testing their proposed evolutionary history through the observed structure and metallicity of the gas.
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A systematic cross-search for radio-inf...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2002-04-23T22:59:15Z/2002-06-04T18:52:35Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2003-07-05T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2003-07-05T00:00:00Z, 001415, 17.56_20190403_1200. https://doi.org/10.5270/esa-fzx34ef