Using ASCA, we have demonstrated the capability of hard X-rays to detect embedded protostars (Class Is). In this proposal we seek to detect youngest protostars, known as Class 0s. Our goals are: 1. To probe when a star begins to emit X-rays. 2. To probe the differences in X-rays between Class 0s and other phases of star formation (Class I, II, III). The OMC 2/3 region is the best target because: (i) The spatial density of the Class 0s is the highest known anywhere in the sky. (ii) The dust temperature gradient from the north (OMC3) to the south (OMC2) indicates a difference in evolutionary status. (iii) Recently, we detected diffuse hard X-rays (2--10 keV) near these Class 0s with ASCA. We need XMM to resolve the diffuse hard X-rays near the Class 0 objects
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2001-03-25T14:33:54Z/2001-03-26T16:22:39Z
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 Yohko Tsuboi, 2002, 'Probing Class 0 Protostars with Hard X-rays virgulOMC2-3 Regionvirgul', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-v8ucb8h
