We plan to derive the X-ray properties of 3 isolated early type galaxies toprovide answers to fundamental issues concerning the connection betweenenvironment and E galaxies formation. The X-ray data will tell us whether groupdominant Es are indeed overluminous and significantly more extended relative toisolated ones. While the presence of extended halos provides strongobservational support to theories assuming that bright Es are formed withingroups, non detections might severely challenge these hierarchical formationmodels. Isolated E samples used in previous works include non isolated Es, dueto limitations in the parent sample from which they are drawn. We therefore haveselected a new sample with solid isolation criteria.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2004-06-14T15:16:22Z/2004-11-04T00:21:11Z
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.
European Space Agency, Dr BIRGIT KELM, 2005, 'X-RAY PROPERTIES OF ISOLATED EARLY-TYPE GALAXIES', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-nr5appp
