A dataset provided by the European Space Agency

Proposal ID 014806
Title X-ray Emission from Uranium Stars
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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
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