A dataset provided by the European Space Agency

Proposal ID 007957
Title Hot Gas in Wind Blown Bubbles
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0079570201

DOI https://doi.org/10.5270/esa-zf7by7s
Principal Investigator, PI Prof You-Hua Chu
Abstract Fast stellar winds from massive stars sweep up the surrounding gas to form bubbles. The shocked stellar wind reaches X-ray-emitting temperatures. Onlytwo wind-blown bubbles have been confirmed to emit diffuse X-rays: NGC 6888and S 308. Both bubbles are blown by Wolf-Rayet stars, and both contain processed stellar material ejected by their progenitors. The observed X-rayfluxes of both NGC 6888 and S308 are lower than model predictions by orders ofmagnitude. The high spatial and spectral resolutions of the XMM instrumentsprovide an opportunity to monumentally improve the quality of the X-ray observations so that a comprehensive investigation of a bubble is possible.We request XMM observations of S 308 in this AO and NGC 6888 in the future.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-10-23T22:01:22Z/2001-10-24T12:36:18Z
Version 21.51_20241115_1113
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 2002-12-31T00:00:00Z
Last Update 2026-07-09
Keywords "wolf rayet stars", "shocked stellar wind", "NGC 6888", "processed stellar material", "wind blown bubbles", "xray fluxes", "ngc 6888", "model predictions", "xmm instruments", "hot gas", "fast stellar winds", "XMM", "spectral resolutions", "comprehensive investigation", "massive stars sweep", "xray emitting temperatures", "emit diffuse xray", "form bubbles"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof You-Hua Chu, 2002, 'Hot Gas in Wind Blown Bubbles', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-zf7by7s
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.