| Proposal ID | 020485 |
| Title | HOT GAS IN THE WIND-BLOWN BUBBLE S 308 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0204850401 |
| DOI | https://doi.org/10.5270/esa-podgs20 |
| Principal Investigator, PI | Dr YOU-HUA CHU |
| Abstract | Fast stellar winds from massive stars sweep up the surrounding gas to formbubbles. The shocked stellar wind reaches X-ray-emitting temperatures. Only twobubbles have been confirmed to emit diffuse X-rays: NGC 6888 and S308. Bothbubbles are blown by Wolf-Rayet stars, contain processed stellar materialejected by their progenitors, and have X-ray luminosity 1-2 orders of magnitudelower than theoretical predictions. Our AO1 XMM-Newton EPIC observations presentthe first high-resolution image and clean spectrum of the diffuse X-ray emissionfrom the interior of S308. The S/N of the data was compromised by a highbackground. We request a re-observation of the AO1 pointing and 3 newobservations to study the detailed global structure of S308. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2004-03-14T23:18:05Z/2004-03-15T21:21:42Z |
| 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 | 2005-09-10T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "processed stellar material", "XMM-Newton", "ngc 6888", "hot gas", "XMM", "xray luminosity", "magnitude lower", "fast stellar winds", "EPIC", "xray emitting temperatures", "resolution image", "emit diffuse xray", "diffuse xray emission", "wolf rayet stars", "global structure", "wind blown bubble", "clean spectrum", "NGC 6888", "shocked stellar wind", "massive stars sweep", "form bubbles" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr YOU-HUA CHU, 2005, 'HOT GAS IN THE WIND-BLOWN BUBBLE S 308', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-podgs20 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |