A dataset provided by the European Space Agency

Proposal ID 020509
Title DETERMINING THE TEMPERATURE OF HOT GAS IN X-RAY FAINT EARLY-TYPE GALAXIES
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DOI https://doi.org/10.5270/esa-1drvvj1
Principal Investigator, PI Dr JIMMY IRWIN
Abstract The temperature of the hot X-ray gas contained within early-type galaxies is animportant diagnostic of the hydrodynamical processes that affect the gas.Previous studies of X-ray bright ellipticals indicate that they are all hotterthan the kinetic motion of the stars, and it has been suggested that the gas isin the potential well of a massive dark matter halo that is dynamically hotterthan the stars. X-ray faint galaxies have lost most of their gas, possiblybecause of a shallower dark matter potential well. If this is true, then the gasthat does remain in these galaxies should have a temperature that more closelyreflects the stellar kinetic temperature. We propose to observe three X-rayfaint galaxies to determine their temperature and test this prediction.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2004-01-06T00:23:24Z/2004-12-23T19:27:21Z
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2006-01-27T00:00:00Z
Keywords "xray faint galaxy", "hot gas", "closely reflects", "stellar kinetic temperature", "xray faint", "xray bright ellipticals", "dynamically hotter", "hot xray gas", "hydrodynamical processes", "kinetic motion", "type galaxy"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr JIMMY IRWIN, 2006, 'DETERMINING THE TEMPERATURE OF HOT GAS IN X-RAY FAINT EARLY-TYPE GALAXIES', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-1drvvj1