|Title||SYSTEMATIC STUDY OF EFFECTS OF HIGH-ENERGY RADIATION ON PROTOPLANETARY SYSTEMS|
|Author||Dr ALEXANDER BROWN|
|Description||High energy (X-ray+UV) radiation from young stars profoundly influences physical and chemical processes in their circumstellar environment.Gas and dust in protoplanetary systems are excited by these photons, which are the dominant ionization source for hundreds AU around the star. X-rays penetrate deep into disks and power complex chemistry on grain surfaces. We propose RGS+EPIC observations of 4 weak-lined T Tauri stars that anchor the non-accreting end of our 111 orbit HST Large Project to observe the UV spectra of a carefully chosen sample of 32 young stars with COS and STIS. Modeling the effects of high energy radiation requires BOTH UV and X-ray spectra. Without RGS observations our analysis of the HST spectra for these four more-evolved (5-9 Myr old) stars will be severely hindered.|
|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, 2012-03-15T00:00:00Z, 065233, 17.56_20190403_1200. https://doi.org/10.5270/esa-wvpitdl|