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
Keywords "massive component detonated", "halo stars", "uranium stars", "XMM", "wasserburg 2001 speculate", "x ray emission", "supernova explosion", "processed material", "evolving companions", "binary system", "binary survived", "XMM-Newton", "ultra metal", "xmm newton"
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