We propose to obtain 11 STIS and 10 XMM spectra of ksi Per to provide thecritical information needed to progress our understanding of the structure of Ostar winds. The details of structures and interactions of the wind are needed toreliably translate observational diagnostics into physical quantities such asmass loss rates which are controversial. The proposed set of combined HST andXMM observations will provide conclusive proof of whether the discreteabsorption components observed in UV wind line profiles are related to X-rayvariability and they will provide the phase difference between the two, whichdetermines their relative locations in the winds. The window of opportunity toobtain such an important and unique data set is closing.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2016-02-06T23:14:38Z/2016-02-29T20:46:38Z
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 Derck Massa, 2017, 'The wind of ksi Per: a tomographic view of stellar wind dynamics', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-40zdb12
