| Proposal ID | 014320 |
| Title | A Search for X-ray Emission in Carbon-rich Wolf-Rayet Stars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0143200101 |
| DOI | https://doi.org/10.5270/esa-e6k74nx |
| Principal Investigator, PI | Dr Stephen Skinner |
| Abstract | We propose to use the excellent sensitivity of XMM-Newton to conduct a searchfor X-ray emission in five of the closest known carbon-rich (WC) Wolf-Rayetstars. Our primary objective is to determine if single WC stars withoutcompanions are X-ray sources. X-ray emission is expected to originate in theirpowerful shocked winds, and a few weak X-ray detections have been reported. But,our review of the archive data indicates that these detections are in doubt andthe X-ray properties of WC stars as a class remain essentially unknown. EPICwill reach detection limits an order of magnitude below previous values and willprovide the information on X-ray emission levels in WC stars that is needed toplan a broader survey of this understudied class of luminous evolved objects. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2003-09-04T13:50:59Z/2003-09-13T17:54:50Z |
| 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 | 2004-10-09T00:00:00Z |
| Keywords | "xray properties", "broader survey", "powerful shocked winds", "XMM", "luminous evolved objects", "weak xray detections", "wc stars", "EPIC", "xmm newton", "xray emission levels", "understudied class", "xray emission", "primary objective", "detection limits", "XMM-Newton", "single wc stars", "archive data", "xray sources" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Stephen Skinner, 2004, 'A Search for X-ray Emission in Carbon-rich Wolf-Rayet Stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-e6k74nx |