| Name | 030027 |
| Title | Accretion Funnels in Classical T Tauri Stars: Xx Chamaeleontis |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0300270201 |
| DOI | https://doi.org/10.5270/esa-dd1cnxn |
| Author | Prof J rgen Schmitt |
| Description | We propose to perform a 130 ksec pointing on the classical T Tauri star XX Cha with XMM-Newton to obtain a high-resolution RGS spectrum. XX Cha would be the third cTTS observed with high spectral resolution, and - just as in TW Hya and BP Tau - we expect to find very high densities (log n_e < 13 ), and a depletion of grain forming metals. With these data we want to show that the X-ray emission from cTTS arises - predominantly - from an accretion funnel shock and not from solar-like magnetic activity. If so, cTTS would be the big brothers to magnetic neutron stars. Further we want to study if the depletion of grain forming metals is a common feature in these accretion flows that can be ascribed presumably to the formation of planetesimals in the accretion disks around cTTS. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2005-09-02T03:10:52Z/2005-09-03T15:00:00Z |
| Version | 17.56_20190403_1200 |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2006-11-11T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof J rgen Schmitt, 2006, 030027, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-dd1cnxn |