|Title||X-rays and Doppler imaging: Do soft emission and accretion coincide?|
|Author||Dr Uwe Wolter|
|Description||Classical T Tauri stars (CTTS) are young, accreting systems. The accretion causes a variable soft X-ray excess and unusual line ratios in the He-like triplets. Accretion signatures can also be seen in optical Doppler images. However, the true correlation of these different signatures only accessible by simultaneous X-ray and ground-based observations has not been studied to date. We propose an 80 ksec XMM-Newton observation covering two full rotations of the CTTS MN Lup; furthermore, we propose simultaneous VLT-UVES spectral observations to obtain a Doppler image of its surface. With its short rotation period and fast rotation, MN Lup is a truly unique target for these observations.|
|Publication||MN Lup: X-Rays from a Weakly Accreting T Tauri Star . Gunther, H. M., Wolter, U., et all. . ApJ . 771-70 . 2013 . 2013ApJ...771...70G ,
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
|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, 2012-09-06T00:00:00Z, 067058, 17.56_20190403_1200. https://doi.org/10.5270/esa-dcdq965|