A dataset provided by the European Space Agency

Name 030265
Title The formation mechanism of bright isolated elliptical galaxies


DOI https://doi.org/10.5270/esa-n6q46ej
Author Dr Ewan O.Sullivan
Description It is as yet unclear what processes govern the formation of ellipticals in the lowest density environments. While low luminosity ellipticals may form through the merger of isolated pairs of spiral galaxies, the only models advanced for forming bright ellipticals in these environments are monolithic collapse or the complete merger of all major galaxies in a group. A small number of such ..fossil. groups have been identified. We propose to determine whether fossil groups make up the majority of the population of luminous isolated ellipticals by observing an optically selected sample of 3 such galaxies, to ascertain whether their X-ray properties are those of groups or individual galaxies.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-04-08T17:15:41Z/2006-04-09T02:46:46Z
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 2007-05-04T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-05-04T00:00:00Z, 030265, 17.56_20190403_1200. https://doi.org/10.5270/esa-n6q46ej