We propose a survey of five nearby Bok globules to search for X-rays from Class0 protostars. X-rays from Young Stellar Objects are likely to originate from thenear vicinity of the star itself. The detection of the X-rays from Class 0protostars, therefore, is of particular importance, providing direct evidencethat the central star has been born. However, the protostars are usually deeplyembedded within the cloud, so that, even the X-rays were completely absorbed.Bok globules are known as star formation sites surrounded by light and smallmolecular clouds of 10 Mo. The small absorption column of Bok globules gives usan opportunity to search whether X-rays turn-on occurs during the Class 0phase and if so, when?
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2010-07-05T07:02:43Z/2010-09-01T05:50:17Z
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, Prof Yohko Tsuboi, 2011, 'Survey of Class 0 Protostars in the Smallest Clouds', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-slp18we
