|Title||The wind of ksi Per: a tomographic view of stellar wind dynamics|
|Author||Dr Derck Massa|
|Description||We propose to obtain 11 STIS and 10 XMM spectra of ksi Per to provide the critical information needed to progress our understanding of the structure of O star winds. The details of structures and interactions of the wind are needed to reliably translate observational diagnostics into physical quantities such as mass loss rates which are controversial. The proposed set of combined HST and XMM observations will provide conclusive proof of whether the discrete absorption components observed in UV wind line profiles are related to X-ray variability and they will provide the phase difference between the two, which determines their relative locations in the winds. The window of opportunity to obtain such an important and unique data set is closing.|
|Publication||Coordinated UV and X-Ray Spectroscopic Observations of the O-type Giant xi Per: The Connection between X-Rays and Large-scale Wind Structure . Massa, Derck, Oskinova, Lida, et all. . ApJ . 873-81 . 2019 . 2019ApJ...873...81M ,
|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, 2017-03-29T22:00:00Z, 077099, 17.56_20190403_1200. https://doi.org/10.5270/esa-40zdb12|