| Name | 072214 |
| Title | The Formation of Metals in Galaxy Clusters |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0722140101 |
| DOI | https://doi.org/10.5270/esa-3kl71cu |
| Author | European Space Agency |
| Description | In rich galaxy clusters, about 80-90% of the metals and the baryons lie in the hot intracluster medium, with the metals believed to originate from the galaxies we see today. However, studies show that the total metal mass scales with the gas mass but not with the stellar mass (the galaxies). The implication is that most of the metals were produced outside of the visible galaxies by an early epoch of supernovae -- a paradigm change in our understanding of heavy element formation. To deepen our understanding of this topic, we will examine whether the metallicities in rich clusters remain at their near-universal value as the stellar fraction approaches zero. Specifically, we propose to determine accurate metallicities in a cluster with an exceedingly low stellar fraction. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-01-03T21:50:12Z/2014-01-31T19:16:45Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2015-02-18T23:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2015, The Formation Of Metals In Galaxy Clusters, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3kl71cu |