| Proposal ID | 014631 |
| Title | Intermediate Mass Young Stars Showing Peculiar X-ray Features |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0146310201 |
| DOI | https://doi.org/10.5270/esa-10rli2e |
| Principal Investigator, PI | Dr Kenji Hamaguchi |
| Abstract | Recent ROSAT and ASCA observations have revealed that intermediate mass young stars are X-ray emitters. We found that the X-ray emission probably originates from the magnetic activity, which continues the early phase of the main-sequencestage for B-type stars. With the Chandra and ASCA observations, we found two young stars, rho Oph S1 and HR 6000, showed characteristic X-ray features; low abundance thermal or non-thermal emission and rapid variation, but the detailed feature is uncertain due to the lack of photon statistics. With XMM-Newton, we determine whether the X-ray emission is thermal or not, and see the variation of X-ray intensity in a short timescale. From these features, we reveal the X-ray emission mechanism. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2003-09-06T06:11:08Z/2003-09-06T12:32:09Z |
| 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 | 2004-10-08T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "xray emission mechanism", "nonthermal emission", "xmm newton", "type stars", "low abundance thermal", "photon statistics", "rapid variation", "hr 6000", "xray emission", "characteristic xray", "short timescale", "main sequence stage", "XMM-Newton", "xray intensity", "rho oph s1", "ROSAT", "intermediate mass", "XMM", "xray emitters", "magnetic activity" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Kenji Hamaguchi, 2004, 'Intermediate Mass Young Stars Showing Peculiar X-ray Features', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-10rli2e |