|Title||High-resolution X-ray spectroscopy of lambda Cep|
|Author||Prof Gregor Rauw|
|Description||We propose to improve our understanding of structures of stellar winds and their implications on the X-ray emission of massive stars by collecting a high-quality, high-resolution RGS spectrum of the O6Ief supergiant lambda Cep. This object shares many properties with the well-observed O4Ief supergiant zeta Pup which turned out to be an incredible puzzle: its X-ray spectrum meets very well the expectations of the wind-embedded shock model, although zeta Pup is not a 'normal. O-type star. This situation contrasts with that of the other more normal, single O-type stars observed in high resolution so far. lambda Cep offers a unique opportunity to investigate the X-ray emission of the sole twin of zeta Pup, and hence to draw a much clearer picture of the emission of single massive stars.|
|Publication||Simultaneous X-ray and optical spectroscopy of the Oef supergiant lambda Cephei . Rauw, G., Herve, A., et all. . A&A . 580-59 . 2015 . 2015A&A...580A..59R ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
On the Absence of Non-thermal X-Ray Emission around Runaway O Stars . Toala, J. A., Oskinova, L. M., . ApJ . 838-19 . 2017 . 2017ApJ...838L..19T ,
Is the Pollock.s paradigm of X-ray emission for O stars correct? . Ryspaeva, E. B., Kholtygin, A. F., . AN . 338-959 . 2017 . 2017AN....338..959R ,
Possible Association of Two Stellar Bowshocks with Unidentified Fermi Sources . Sanchez-Ayaso, E., del Valle, Maria V., et all. . ApJ . 861-32 . 2018 . 2018ApJ...861...32S ,
Analysis of the X-ray emission of OB stars: O stars . Ryspaeva, Elizaveta, Kholtygin, Alexander, . RAA . 18-104 . 2018 . 2018RAA....18..104R ,
|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, 2014-08-31T00:00:00Z, 072009, 17.56_20190403_1200. https://doi.org/10.5270/esa-yk72qxj|