A dataset provided by the European Space Agency

Name 065189
Title A deep search for a hot halo of NGC 5746: Constraining disk galaxy formation


DOI https://doi.org/10.5270/esa-7v6dp39
Author Dr Jesper Rasmussen
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, 2012-03-08T00:00:00Z, 065189, 17.56_20190403_1200. https://doi.org/10.5270/esa-7v6dp39