A dataset provided by the European Space Agency

Name 009003
Title RGS Abundance Measurement of Wolf-Rayet Stellar Wind


DOI https://doi.org/10.5270/esa-tdqk5r5
Author Dr Yoshitomo Maeda
Description The Wolf-Rayet system HD 193793 is a wide binary classified as WC7 + O4-5 with an orbital period of 7.94 years. HD 193793 emits the thin thermal X-ray emission from the colliding wind shock. The X-ray spectrum is also heavily absorbed below 2 keV by the Wolf-Rayet wind. We thus propose RGS-XMM observation of HD 193793 in November 2001, 10 months after periastron passage. With the highspectroscopic capability of RGS, we expect to clearly detect neon K-lines and K-edge in the spectrum, which allow us to measure neon abundance for the first time. The neon abundance in W-R winds is helpful to constrain the chemical evolution of massive stars and crucial to our understanding of the Galaxy, the ISM and the cosmic-rays.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2004-07-20T11:21:43Z/2004-07-21T20:36:35Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2006-05-26T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2006-05-26T00:00:00Z, 009003, 17.56_20190403_1200. https://doi.org/10.5270/esa-tdqk5r5