| Name | 014858 |
| Title | Physical pairs: a way station on the road of coalescence of poor groups |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0148580101 |
| DOI | https://doi.org/10.5270/esa-dlwcsf2 |
| Author | European Space Agency |
| 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. |
| Publication | No observations found associated with the current proposal |
| 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, Physical Pairs: A Way Station On The Road Of Coalescence Of Poor Groups, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-dlwcsf2 |