| Proposal ID | 040341 |
| Title | A high-resolution X-ray spectra of a classical T Tauri star |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0403410101 |
| DOI | https://doi.org/10.5270/esa-iyxdubp |
| Principal Investigator, PI | Dr Gregory Herczeg |
| Abstract | Comparisons of X-ray emission from accreting and non-accreting T Tauri stars(TTSs) demonstrate that accretion affects the properties of the hot gas, but theorigin of X-ray emission from accreting TTSs remains uncertain. The few existinghigh-resolution X-ray spectra of classical TTSs (CTTSs) have been particularlyintriguing, revealing low forbidden-to-intercombination ($f/i$) line ratiosindicative of either a high electron density or intense FUV radiation field,both hard and soft X-ray emission, and often a high Ne abundance relative to O.We propose to obtain RGS spectra of the CTTSs EX Lupi and FK Ser, which whencombined with previous high-resolution X-ray spectra will allow us to correlatethe $f/i$ ratio with other stellar properties, including the mass accretion rate. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-09-18T01:06:35Z/2006-09-18T22:33:24Z |
| 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 | 2008-08-29T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "soft xray emission", "line ratios indicative", "classical ttss cttss", "accretion affects", "fk ser", "ne abundance relative", "rgs spectra", "resolution xray spectra", "hot gas", "cttss ex lupi", "tauri star", "mass accretion rate", "electron density", "accreting ttss", "stellar properties", "revealing low forbidden", "tauri stars ttss", "xray emission" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Gregory Herczeg, 2008, 'A high-resolution X-ray spectra of a classical T Tauri star', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-iyxdubp |