| Proposal ID | 050359 |
| Title | Defining Pre-Outburst and Post-Outburst Characteristics of Eruptive Young Stars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0503590101 |
| DOI | https://doi.org/10.5270/esa-x9oen4l |
| Principal Investigator, PI | Dr Guy Stringfellow |
| Abstract | EXORs are extreme T Tauri stars that experience major UV-optical eruptions (3-5mag) that last about a year. These recurring outbursts driven by high accretionrates assist in dispersal of the circumstellar disk and the large X-ray-UV fluxinjected into the local environment modifies the physical and chemical history,influencing planet formation and time scales. Little X-ray data exists on thesestars during either quiescent or outburst phases, so basic details such as howmuch X-ray flux is produced during eruption is unknown. We will characterize theX-ray properties of 6 EXORs in their quiescent phase. If an eruption of anyknown EXOR occurs during AO6, a high-quality spectrum will be obtained.Contrasting quiescent and outburst properties provides crucial insight into the physics. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-08-13T11:28:50Z/2007-09-11T15:51:42Z |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2008-10-25T00:00:00Z |
| Keywords | "contrasting quiescent", "quality spectrum", "post outburst characteristics", "defining pre outburst", "recurring outburst driven", "time scales", "xray properties", "outburst phases", "exor occurs", "influencing planet formation", "circumstellar disk", "xray flux", "quiescent phase", "outburst properties", "tauri stars", "accretion rates assist", "chemical history" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Guy Stringfellow, 2008, 'Defining Pre-Outburst and Post-Outburst Characteristics of Eruptive Young Stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-x9oen4l |