Proposal ID | 072157 |
Title | Hot Gas in the Wolf-Rayet Bubble NGC 6888 |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0721570101 |
DOI | https://doi.org/10.5270/esa-28791n8 |
Principal Investigator, PI | Mr Jesus A. Toala |
Abstract | The fast stellar winds from Wolf-Rayet (WR) stars sweep up the circumstellarmedia and form the so-called wind-blown bubbles or WR bubbles. The shock ofthese fast stellar winds against the dense shells left by previous evolutionarystages is expected to produce gas at X-ray-emitting temperatures. However,diffuse X-ray emission has been detected only inside two WR bubbles: S308 andNGC 6888. Our 100 ks Chandra ACIS-S observation of the northwest quadrant of NGC6888 presents the first high-resolution image and clean spectrum of its diffuseX-ray emission. To obtain a global view of the physical structure of NGC 688, wehere request a 60 ks XMM-Newton observation, which will otherwise take Chandra300 ks for a similar mapping of the entire nebula. |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2014-04-05T23:05:16Z/2014-04-06T20:10:16Z |
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 | 2015-04-25T22:00:00Z |
Keywords | "clean spectrum", "XMM-Newton", "circumstellar media", "xmm newton", "wr bubbles", "xray emitting temperatures", "resolution image", "chandra acis", "dense shells left", "ngc 6888", "physical structure", "evolutionary stages", "XMM", "inside wr bubbles", "northwest quadrant", "ngc 688", "hot gas", "NGC 6888", "fast stellar winds", "diffuse xray emission" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Mr Jesus A. Toala, 2015, 'Hot Gas in the Wolf-Rayet Bubble NGC 6888', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-28791n8 |