
| Proposal ID | 020509 |
| Title | DETERMINING THE TEMPERATURE OF HOT GAS IN X-RAY FAINT EARLY-TYPE GALAXIES |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0205090101 |
| 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 |
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| 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 |
| Last Update | 2025-08-04 |
| Keywords | "closely reflects", "dynamically hotter", "xray bright ellipticals", "hydrodynamical processes", "xray faint galaxy", "stellar kinetic temperature", "hot gas", "type galaxy", "xray faint", "hot xray gas", "kinetic motion" |
| 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 |