In order to address the question of the origin of X-ray emission in Classical TTauri stars we propose an XMM-Newton observation of XZ Tau. We propose tomonitor the source over 6 days to follow the variation of hydrogen columndensity in front of the star, over two rotational periods of the star. This willallow a rotational modulation of the hydrogen column density to be detected, ifpresent, and therefore unambiguously identify the existence on XZ Tau of aco-rotating accretion stream shadowing an X-ray bright hot spot. This will bestrong evidence for the X-ray emission mechanism being mainly accretion driven.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2004-03-04T16:02:29Z/2004-03-10T04:49:43Z
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 GIOVANNA GIARDINO, 2005, 'IS THE X-RAY EMISSION FROM THE CTTS XZ TAU ACCRETION DRIVEN', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3cdv3vs
