Recent observations of X-ray faint early-type galaxies have yielded surprisingresults. Firstly, there seems to be substantially lower ISM metal enrichmentthan expected from observations of the brightest galaxies and groups, andsecondly the existence of dark matter halos in them, which are predicted byN-body cosmological simulations, has been called into question. Both of theseresults suggest a sharp change in galaxy properties at intermediateluminosities. However, data-points from galaxies between these extremes arerare. We propose a 60ks observation of the S0 NGC1332, to supplement Chandradata that are providing tantalizing but inconclusive constraints in both ofthese key areas.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2006-01-15T18:34:54Z/2006-01-16T12:52:28Z
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 Philip Humphrey, 2007, 'Mining the metal enrichment history and dark matter halo in NGC 1332', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-q8qk3tf
