In 2009 and 2011 we observed HD 189733 with XMM-Newton at the eclipse of its hotJupiter. We found a striking similarity in a relatively bright flare just afterthe end of the planet eclipse in both observations. The corona of this virgul5Gyr oldstar is extraordinarily unusual: it is cold, dense, and flaring very frequently.We propose to observe HD 189733 at the planet eclipse, as in 2009 and 2011, totest if the planet is triggering flare activity on the stellar corona when at awell precise phase. With the RGS spectra we will assess any changes in the lineintensity of He-like triplets and Fe on a time scale of one to three years.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2012-05-07T18:24:32Z/2012-05-08T11:29:48Z
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 Ignazio Pillitteri, 2013, 'X-rays variability of HDvirgul189733 phased with the motion of its hot JupiterquestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rnl3clp
