| Name | 009003 |
| Title | RGS Abundance Measurement of Wolf-Rayet Stellar Wind |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0090030201 |
| 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 |