Proposal ID | 015215 |
Title | Identification of the remnant of a galaxy group |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0152150101 |
DOI | https://doi.org/10.5270/esa-ixn02qz |
Principal Investigator, PI | Mr Isao Takahashi |
Abstract | Although a group of galaxies is predicted to evolve into a single ellipticalgalaxy within a relatively short span, no clear counterpart of such a mergerremnant has been identified with a direct evidence so far. Here we propose a 30ksec observation of NGC1550 to attempt a first firm identification of suchremnants, through measurements of the distribution of the gas metallicity whichis assumed to reflect the distrubution of galaxies in the past. |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2003-02-22T09:31:28Z/2003-02-22T18:06:40Z |
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 | 2004-03-25T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "relatively short span", "firm identification", "single elliptical galaxy", "NGC1550", "gas metallicity", "merger remnant" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Mr Isao Takahashi, 2004, 'Identification of the remnant of a galaxy group', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ixn02qz |