Name | 078233 |
Title | Unveiling a Mysterious Nearby Cool-Core Cluster Lacking a Central BCG |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0782330101 |
DOI | https://doi.org/10.5270/esa-lwqtvhy |
Author | Dr Yuanyuan Su |
Description | The nearby cluster Abell 1142 is experiencing an off-axis merger between two subclusters of roughly equal masses. Each subcluster contains a Brightest Cluster Galaxy (BCG). Abell 1142 appears to harbor a cool core with a metal abundance gradient declining outward. This cool core is offset from each BCG by virgul100 kpc. We propose a moderately deep XMM observation of this unique object to obtain its detailed metal distributions in the central region and probe its global gas properties out to 0.5 R_500. The requested observation will enable us to (1) study the enrichment processes of cluster centers (to distinguish between the BCG and the sub-group infall origins) and (2) understand the role of mergers in the formation and destruction of cluster cool cores. |
Publication | No observations found associated with the current proposal |
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2016-06-05T03:56:15Z/2016-06-20T02:48:14Z |
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 | 2017-07-12T22:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Yuanyuan Su, 2017, 078233, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lwqtvhy |