| Proposal ID | 092074 |
| Title | Measuring Projection Effects in Optical Cluster Catalogues |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0920740101 |
| DOI | https://doi.org/10.57780/esa-oq93nb3 |
| Principal Investigator, PI | Mr Justin Myles |
| Abstract | The impact of projection effects on optical, photometric galaxy clusterselection has recently been clarified at z ~ 0.1 using extensive spectroscopy ofputative member galaxies. The projected fraction of photometrically associatedgalaxies has been constrained in bins as a function of richness, along with therelations between photometric and spectroscopically corrected richness andvelocity dispersion. We propose XMM-Newton observations of a complete sub-sampleof these clusters at high richness to obtain low-scatter X-ray mass proxies.These measurements will provide independent, complementary information onprojection effects and, crucially, will allow the scatter of spectroscopicallycorrected richness with mass to be quantified. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2023-05-29T07:59:48Z/2023-06-23T23:25:51Z |
| Version | 20.10_20230417_1156 |
| 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 | 2024-07-15T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | XMM-Newton, OM, RGS, EPIC, X-ray, Multi-Mirror, SAS |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mr Justin Myles, 2024, 'Measuring Projection Effects in Optical Cluster Catalogues', 20.10_20230417_1156, European Space Agency, https://doi.org/10.57780/esa-oq93nb3 |