Scaling relations between L_X, L_opt, T_X, and sigma for elliptical galaxies area useful tool to probe the hydrodynamical state of hot gas within early-typegalaxies. The comparison of these relations to those of groups and clusters alsoprovides insight into the self-similarity behavior of hot gas over a wide rangeof potential well depths. We propose XMM-Newton observations of eight of themost massive and luminous galaxies discovered in the Sloan Digital Sky Survey toextend these relations for elliptical galaxies to optical luminosities a factorof three more luminous than in previous studies. Two of the galaxies are lensesin spectacular strong lensing systems, including a galaxy with an astoundingstellar velocity dispersion of 530 km/s.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2010-12-07T16:56:09Z/2010-12-26T00:31:39Z
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, Prof Jimmy Irwin, 2012, 'Probing the High Luminosity End of Elliptical Galaxy X-ray Scaling Relations', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-k0w7sq7
