We have analyzed archived Chandra data for a sample of 18 low-luminosityearly-type galaxies and found that all of the galaxies are gas poor. The ratioof gas mass to stellar mass in these galaxies is ten times less than that foundamong more luminous galaxies, suggesting the presence of galactic winds in thesesystems.We find that Type Ia supernovae are energetically favored over AGN asthe dominant heating mechanism driving the winds. If these galaxies possessSNeIa driven galactic winds, then the Fe abundance of the hot gas should behighly super solar.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2008-12-12T07:25:25Z/2008-12-23T01:34:16Z
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 Laurence David, 2010, 'The Fe-to-Oxygen Ratio in Early-Type Galaxies with Galactic Winds', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-4lbsybn
