The lambda Ori star forming region (5 Myr, 400 pc) is surrounded by a 5 x 5 degwide molecular ring probably formed by a supernova explosion. Our previousmulti-wavelength studies focused on the most well-known areas within the cloudcomplex. For a complete picture of star formation, believed to be determined bythe supernova blast, the large-scale distribution of the pre-main sequencepopulation in lambda Ori needs to be examined. We suspect a further pre-mainsequence cluster to be associated with a concentration of B-type stars near theNE of the molecular ring. A search for X-ray emission is the most efficient wayof identifying the low-mass cluster. The properties of its members will then becompared to the other lambda Ori subgroups.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2009-09-05T23:06:37Z/2009-09-06T13:32:08Z
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 Beate Stelzer, 2010, 'A twin cluster to Collinder 69 in the lambda Orionis star forming region', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-toh4srj
