We propose to observe two galaxies from a sample of nearby, isolated ellipticalsfor which we have extensive optical and near-IR data. Our proposed targets areunique in that unlike other ellipticals, they are not surrounded by a populationof dwarf galaxies. We will combine the proposed XMM-Newton observations with ourexisting data to: (1) determine the relationship, if any, between the X-ray halomass and optical galaxy mass, (2) compare the properties of isolated ellipticalswith those of ellipticals in denser environments, and (3) search for directevidence that ellipticals can evolve from the merger of poor groups. Theseobservations will help constrain models for the formation of ellipticalgalaxies.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2005-04-06T15:34:21Z/2005-09-19T04:01:25Z
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 Ann Zabludoff, 2006, 'XMM-Newton Observations of Isolated Elliptical Galaxies', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-5c2vs5o
