A dataset provided by the European Space Agency

Name 041338
Title Observations of a Distant Luminous Cluster of Galaxies


DOI https://doi.org/10.5270/esa-rktv9bz
Author Prof Melville Ulmer
Description A key to understanding cluster evolution is to study distant clusters of
in X-rays. We propose to observe with Chandra, XMM-Newton, and Spitzer CL1257
(Cl J1257+4738). CL1257 is the most distant (z=0.866) cluster found in the SHARC
survey and the second most X-ray luminous cluster above z=0.85. The data will
help to determine the global physical properties of CL1257 and its global
dynamical state. With recent Gemini data we found 4 out of 6 cluster member
galaxies to have [OII] 3727 emission lines, implying recent starburst activity.
A compilation of luminosity versus redshift of known clusters above z=0.85
suggests that clusters do not reach their peak X-ray luminosity until z=0.9.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2007-05-24T06:59:56Z/2007-05-26T22:53:28Z
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 2008-06-22T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Melville Ulmer, 2008, 041338, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rktv9bz