| Name | 065189 |
| Title | A deep search for a hot halo of NGC 5746: Constraining disk galaxy formation |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651890101 |
| DOI | https://doi.org/10.5270/esa-7v6dp39 |
| Author | European Space Agency |
| Description | Most galaxy formation models predict that massive low-redshift disk galaxies are embedded in extended hot halos of externally accreted gas. Yet observational studies have so far failed to detect soft X-ray emission from such halos. Our cosmological simulations, the first to produce fully realistic disk galaxies, suggest this is within reach but requires a factor of 10 increase in sensitivity compared to existing X-ray studies. We propose a deep observation of the massive spiral NGC5746, to decisively test for the presence of such a halo and constrain its properties. A detection will confirm a basic tenet of disk galaxy formation models, whereas a non-detection will seriously challenge these models and impose new constraints on the growth mode and feedback history of disk galaxies. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2011-01-10T14:54:00Z/2011-02-10T13:41:24Z |
| 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 | 2012-03-08T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2012, A Deep Search For A Hot Halo Of Ngc 5746: Constraining Disk Galaxy Formation, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-7v6dp39 |