GT- Orion-B has four main centers of star formation with cloud core masses from 260-430 solar masses. In ROSAT observations about 50 X-ray sources within 100 sq.amin have been found in NGC 2024. The X-ray sources appeared to be deeply embedded young stellar objects, possibly T-Tauri stars with kT = 1 keV. Excellent positional correlation was found with infrared K bandobjects. We want to obtain information on the content of point sources, on source variability, on the mass range, on correlation with IR properties, and on the relation of richness of X-ray clusters with parameters like SFE and core mass.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2002-03-06T13:11:44Z/2002-03-24T18:54:37Z
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.
European Space Agency, Dr Bernd Aschenbach, 2003, 'Comparative X-ray study of deeply embedded stellar clusters in Orion B', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-jpzimdl
