Observations of N4552, N4125, N1395, and N1600, four X-ray-bright ellipticalgalaxies with extended emission line filaments and dust, will be used to studythe interaction between the hot, X-ray emitting gas and cooler interstellarmaterial. We will determine whether heat conduction into the cooler gas orenergy losses to grains affect the thermal state of the gas. The elementalabundances and gradients in the hot gas will be derived and compared to thestellar values. If the gas results from local stellar mass loss, the abundancesshould be similar. If there is a cooling flow, the abundances at each radiusshould reflect those of stars at larger radii. The RGS will be used to dispersethe central regions of the galaxies and to detect or limit low ionization X-ray lines from cooling gas.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2003-07-10T09:27:28Z/2003-10-17T23:31:17Z
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 Craig Sarazin, 2004, 'Stellar Mass Loss Versus External Accretion in X-ray Bright Ellipticals', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-8ghsyit
