A dataset provided by the European Space Agency

Name 014858
Title Physical pairs: a way station on the road of coalescence of poor groups
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0148580101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0148580201

DOI 10.5270/esa-dlwcsf2
Author Dr Ginevra Trinchieri
Description Our knowledge of galaxy evolution in a hierarchical evolutionary scenario requires understanding of progressively poorer structures. Poor-loose groups represent the defining galaxy aggregates in the field and are probably closely connected to physical pairs as well as to isolated E galaxies. We propose to observe a sample of mixed morphology physical pairs, isolated or in poor environments in the Southern hemispere. Systems span a wide range of impact parameters, indicative of different stages-kinds of galaxy encounters in the field. Our specific aim is to reach a definition of the evolutionary state of the pair-loose group, which could be closely linked to their X-ray properties.
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Exosph...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-07-17T15:15:21Z/2003-10-19T21:58:14Z
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 2004-11-07T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2004-11-07T00:00:00Z, 014858, 17.56_20190403_1200. https://doi.org/10.5270/esa-dlwcsf2