|Title||X-ray Study of Tau-Sco-like Massive Stars|
|Author||Dr Richard Ignace|
|Description||We request 50 ksec of XMM time to obtain EPIC spectra of two early B type stars, HD66665 and HD63425, which have observable properties similar to tau Sco. Specifically, they are both slowly rotating, magnetic early, main sequence B stars with peculiar UV resonance line profiles. The proposed observations will determine whether their X-ray spectra also contain an anomalously hard component like tau Sco.s. If so, the new observations will provide valuable insight into the interaction of X-ray and UV spectral characteristics and will demonstrate that tau Sco is not a simple curiosity, but rather the proto-type of a class of magnetic stars which are, perhaps, part of a sequence, or a particular evolutionary phase of massive, magnetic 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, 2012-11-29T00:00:00Z, 067199, 17.56_20190403_1200. https://doi.org/10.5270/esa-3mz5v5m|