| Proposal ID | 082153 |
| Title | Updating scaling relations for low-mass galaxy groups from the PSPC samples |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0821530101 |
| DOI | https://doi.org/10.5270/esa-2fcn30u |
| Principal Investigator, PI | Dr Ming Sun |
| Abstract | Galaxy groups are ideal systems to study baryonic physics, which is importantfor both using X-ray observations of clusters for precision cosmology andstudying galaxy formation and evolution. Our understanding on the hot gasproperties of galaxy groups has been greatly improved with XMM and Chandra.However, limited progress has been made for low-mass groups. In fact, the L-Trelations in the literature still use the ROSAT PSPC results for such low-massgroups, even though the PSPC results can be quite uncertain. We have started aproject for a complete re-analysis of the kT < 0.6 keV groups from the PSPCsamples with XMM and Chandra data. Two groups need new XMM observations, whichare requested here. The results will extend important scaling relations to lower mass groups. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2018-07-07T05:46:42Z/2018-07-20T01:13:43Z |
| Version | 21.51_20241115_1113 |
| 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 | 2019-08-14T22:00:00Z |
| Last Update | 2026-06-19 |
| Keywords | "lower mass", "pspc samples", "hot gas properties", "XMM", "updating scaling relations", "ideal systems", "scaling relations", "galaxy formation", "low mass", "baryonic physics", "limited progress", "chandra data", "rosat pspc", "precision cosmology", "greatly improved", "low mass galaxy", "complete re analysis", "ROSAT" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Ming Sun, 2019, 'Updating scaling relations for low-mass galaxy groups from the PSPC samples', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-2fcn30u |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |