| Name | 050248 |
| Title | An Unbiased Sample of Local Elliptical Galaxies |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502480101 |
| DOI | https://doi.org/10.5270/esa-gfkpdn9 |
| Author | Dr Ewan O.Sullivan |
| Description | Examination of the coverage of elliptical galaxies in the XMM and Chandra archives reveals a bias toward the brightest nearby galaxies, and particularly to the dominant ellipticals of groups and clusters, rendering accurate statistical studies of galaxy properties impossible. To correct this problem, we propose short observations of 22 non-dominant ellipticals with log LB greater than 10 solar, Distance less than 30 Mpc, and |b| greater than 10 degrees. Combined with 25 galaxies from the archive, these exposures will form a complete, representative and unbiased sample of non-dominant ellipticals. This can then be used to determine the true range of gas content and properties in elliptical galaxies, shedding light on halo formation and evolution. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-05-01T12:18:02Z/2008-01-05T03:56:23Z |
| 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 | 2009-02-01T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2009-02-01T00:00:00Z, 050248, 17.56_20190403_1200. https://doi.org/10.5270/esa-gfkpdn9 |