A dataset provided by the European Space Agency

Name 020219


DOI https://doi.org/10.5270/esa-kc2vz2t
Author European Space Agency
Description The high densities and low velocity dispersions seen in galaxy groups can lead
to the formation of .fossil groups., in which all the major galaxies have merged
to form one giant elliptical. Very few of these objects have been observed, and
almost all are at moderate redshift, making detailed analysis difficult. We have
defined a sample of fossil candidates at low redshift, and propose to use
XMM-Newton to characterise their X-ray halos. High resolution observations of
these targets will allow us to test our understanding of their nature and
origins, and to measure the properties of what may be the oldest undisturbed
galaxy systems in the Universe.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-12-17T20:00:31Z/2004-05-20T17:35:01Z
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 2005-06-12T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2005, Fossil Groups In The Local Universe, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kc2vz2t