Proposal ID | 014806 |
Title | X-ray Emission from Uranium Stars |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0148060101 |
DOI | https://doi.org/10.5270/esa-qtg4jks |
Principal Investigator, PI | Dr Eric M. Schlegel |
Abstract | Recent observations have revealed the presence of uranium in twoultra-metal-poor halo stars. Qian & Wasserburg (2001) speculate thaturanium requires the stars to have been, at one time, members ofa binary system in which the more massive component detonated ina supernova explosion, peppering the still-evolving companions withr-processed material. Assuming the binaries survived the explosion,they should contain X-ray emitting compact stars. XMM-Newton observationswill test this scenario. |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2002-12-23T07:16:20Z/2003-12-23T03:32:17Z |
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 | 2005-01-17T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "binary system", "massive component detonated", "xmm newton", "supernova explosion", "XMM-Newton", "processed material", "wasserburg 2001 speculate", "x ray emission", "binary survived", "XMM", "ultra metal", "uranium stars", "halo stars", "evolving companions" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Eric M. Schlegel, 2005, 'X-ray Emission from Uranium Stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-qtg4jks |