| Proposal ID | 086223 |
| Title | Tight surveillance of the exemplary O star zeta Ophiuchi with XMM-Newton and HST |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0862230101 |
| DOI | https://doi.org/10.57780/esa-ok4re5r |
| Principal Investigator, PI | Dr Lidia Oskinova |
| Abstract | We propose a novel and decisive experiment that relies on the unrivaled jointcapabilities of XMM and HST. The closest O-type star, zeta Oph, shall beobserved continuously over its rotational period to reveal the physics ofstellar wind heating. We will discriminate between alternative models for X-rayproduction in O stars\: the hot plasma is generated either in stochastic windshocks or in corotating interaction regions. The new superb X-ray image willprobe the physical conditions in the circumstellar matter of an O star. Nosimilar observations were performed before on a massive star. Observing zeta Ophfor 80ks with XMM and 15 HST orbits will allow to study correlated X-ray and UVvariability and achieve a breakthrough in our understanding of O stars. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, RGS1, RGS2 |
| Temporal Coverage | 2020-09-09T12:01:49Z/2020-09-10T14:19:03Z |
| Version | 18.02_20200221_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 | 2021-10-27T00:00:00Z |
| Keywords | "alternative models", "XMM-Newton", "hot plasma", "decisive experiment", "zeta oph", "xray production", "xmm newton", "hst orbits", "superb xray image", "XMM", "circumstellar matter", "uv variability", "correlated xray", "type star", "physical conditions", "star zeta ophiuchi", "stellar wind heating", "massive star", "tight surveillance", "corotating interaction region", "stars \:", "rotational period", "stochastic wind shoc", "HST" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Lidia Oskinova, 2021, 'Tight surveillance of the exemplary O star zeta Ophiuchi with XMM-Newton and HST', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-ok4re5r |