| Proposal ID | 014858 |
| Title | Physical pairs: a way station on the road of coalescence of poor groups |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0148580101 |
| DOI | https://doi.org/10.5270/esa-dlwcsf2 |
| Principal Investigator, PI | Dr Ginevra Trinchieri |
| Abstract | Our knowledge of galaxy evolution in a hierarchical evolutionary scenariorequires understanding of progressively poorer structures. Poor/loose groupsrepresent the defining galaxy aggregates in the field and are probably closelyconnected 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 impactparameters, indicative of different stages/kinds of galaxy encounters in thefield. Our specific aim is to reach a definition of the evolutionary state ofthe pair/loose group, which could be closely linked to their X-ray properties. |
| Publications |
|
| 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 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2004-11-07T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "southern hemispere", "galaxy evolution", "galaxy encounters", "evolutionary scenario", "closely linked", "physical pairs", "xray properties", "wide range", "systems span", "closely connected", "defining galaxy aggregates", "impact parameters" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Ginevra Trinchieri, 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 |