|Title||THE FIRST X-RAY SPECTROSCOPY OBSERVATION OF WO BINARY|
|Author||Dr Yoshitomo Maeda|
|Description||We propose a 50 ksec XMM-Newton observation of a massive stellar binary WR30a. The binary consists of a WO-type Wolf-Rayet star and an O type companion. A WO-type star is generally thought to be the final evolutionary stage in the WR phase, and has the fastest stellar wind with average terminal velocity approx 5000 km s-1. To date, there is no report on X-ray detection from WO-type stars, while intensive studies have been made for WN- and WC- type stars with X-rays. Our aim is to detect X-rays from a WO-type binary for the first time, and to compare the X-ray properties (especially the plasma temperature) with those of well-researched two types (WN and WC).|
|Publication||Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
X-rays from the oxygen-type Wolf-Rayet binary WR 30a . Zhekov, Svetozar A., Skinner, Stephen L., . MNRAS . 452-872 . 2015 . 2015MNRAS.452..872Z ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2011-02-23T00:00:00Z, 060633, 17.56_20190403_1200. https://doi.org/10.5270/esa-yba65mr|