A dataset provided by the European Space Agency

Proposal ID 050613
Title THE NATURE OF FOSSIL GROUPS: CLUES TO THEIR ORIGIN
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0506130201
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0506130301
DOI https://doi.org/10.5270/esa-kctaxmd
Principal Investigator, PI Prof Claudia Mendes de Oliveira
Abstract The main objective of this program is to test the possibility that a fossilgroup is the end-product of the merging of dense groups/poor clusters. Fossilgroups exhibit an extended X-ray halo with LX, total mass and gas mass similarto poor clusters, but optically they are dominated by a single luminouselliptical galaxy surrounded by faint companions. We plan to obtain XMM-Newtondata to analyse the diffuse emission of two fossils groups selected from theSDSS and ROSAT databases. We will determine their masses, M/L, measure theirtemperatures and metallicities and map their gas densities, in order to infertheir dynamical states.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2008-03-26T13:01:47Z/2008-03-27T01:56:16Z
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2009-04-11T00:00:00Z
Keywords "xmm newton data", "SDSS", "XMM", "rosat databases", "total mass", "XMM-Newton", "main objective", "faint companions", "gas densities", "ROSAT", "diffuse emission", "gas mass", "xray halo"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Claudia Mendes de Oliveira, 2009, 'THE NATURE OF FOSSIL GROUPS: CLUES TO THEIR ORIGIN', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kctaxmd