Thanks to XMM-Newton observations, we have discovered a young stellar clustercentered on Kappa Ori and unrelated to the background Orion A association. Herewe want to use the same method to identify the eastern edge of the cluster bymeans of a 40 ks observation of the V1818 Ori clump of young stellar objects. Bymeasuring fluxes and luminosities of these objects and comparing these to OrionA luminosities we will infer their distances, and determine whether these are:250 pc as part of Kappa Ori cluster, 400 pc as part of Orion A, or 900 pc likethe Mon R2 association, to which the clump is associated in literature. Thistype of X-ray programs complement GAIA science in regions of dense dust, whereGAIA cannot determine distances of embedded objects.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2017-04-06T08:11:07Z/2017-04-06T20:07:47Z
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 Ignazio Pillitteri, 2018, 'The eastern edge of the Kappa Ori cluster', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-e4iyk5y
