|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||No observations found associated with the current proposal|
|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|