A dataset provided by the European Space Agency

Name 040113
Title X-ray Luminous Groups in the Process of Formation
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0401130101

DOI https://doi.org/10.5270/esa-t3aukf5
Author Dr John Mulchaey
Description We propose XMM-Newton observations of two X-ray luminous groups at intermediate
redshifts that do not follow the morphological trends found for nearby X-ray
groups. In particular, the X-ray emission in these systems is not centered on a
dominant elliptical galaxy. Such systems are very rare in the nearby universe,
suggesting significant evolution in the X-ray group population over the last 5
billion years. Groups without a central galaxy may be systems in the process of
collapsing for the first time. Our deep XMM-Newton observations will allow us to
test this idea by searching directly for substructure in the hot gas and looking
for the departures expected from optical/X-ray scaling relations.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-12-04T20:22:22Z/2006-12-05T09:18:29Z
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 2008-02-03T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr John Mulchaey, 2008, 040113, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-t3aukf5