A dataset provided by the European Space Agency

Proposal ID 014631
Title Intermediate Mass Young Stars Showing Peculiar X-ray Features
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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
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
Keywords "xray emitters", "XMM-Newton", "xmm newton", "hr 6000", "xray intensity", "low abundance thermal", "photon statistics", "nonthermal emission", "rapid variation", "intermediate mass", "ROSAT", "main sequence stage", "XMM", "xray emission mechanism", "rho oph s1", "characteristic xray", "type stars", "short timescale", "xray emission", "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