A1674 is a richness class 3 cluster at z=0.106 with fairly low X-ray luminosityof 5e43 erg/s. ASCA observation of this cluster revealed its low metalabundance (90% upper limit of 0.2 Solar). Moreover, its optical magnitude-colordiagram implies deficiency of elliptical galaxies in this cluster, suggestingA1674 could provide valuable support for the hypothesis that metal in thecluster hot gas is mainly supplied by elliptical galaxies. With XMM observationof this cluster, we aim to determine the metal abundance of the hot gas withinan error of 0.05 Solar. If the low metal abundance is confirmed, it would leadto a discovery of hot primordial gas in the universe.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2002-04-17T06:12:43Z/2002-04-17T14:13:49Z
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.
European Space Agency, Dr Kiyoshi Hayashida, 2003, 'Metal Abundance of A1674: search for Hot Primordial gas in a cluster of galaxies', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-8ct0h7j
