| Proposal ID | 040621 |
| Title | The X-ray properties of optically-selected clusters at z > 0.6 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0406210101 |
| DOI | https://doi.org/10.5270/esa-bbkkg65 |
| Principal Investigator, PI | Dr Olivia Johnson |
| Abstract | The ESO Distant Cluster Survey (EDisCS) comprises an extremely well-studiedsample of optically-selected cluster fields, including eightspectroscopically-confirmed clusters at z > 0.6 for which velocity dispersionsand weak lensing maps have already been derived. We have studied three fieldswith XMM to date and here propose a completion of the sample. The proposedobservations will allow us to: i) significantly expand the high-redshift L_X -sigma and T - sigma relations; ii)study the X-ray properties of the progenitorsof typical present-day clusters; iii) examine the inherent biases inX-ray-selected high-redshift cluster surveys; and iv) test the validity ofvarious mass estimation methods at high redshift. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-07-21T02:54:33Z/2006-12-02T00:34:36Z |
| 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 | 2008-01-04T00:00:00Z |
| Last Update | 2026-03-04 |
| Keywords | "redshift cluster surveys", "velocity dispersions", "XMM", "inherent biases", "redshift l_x sigma", "sigma relations", "cluster fields", "iv test", "weak lensing maps", "iii examine", "xray properties" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Olivia Johnson, 2008, 'The X-ray properties of optically-selected clusters at z > 0.6', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-bbkkg65 |