A dataset provided by the European Space Agency

Name 014806
Title X-ray Emission from Uranium Stars


DOI https://doi.org/10.5270/esa-qtg4jks
Author Dr Eric M. Schlegel
Description Recent observations have revealed the presence of uranium in two
ultra-metal-poor halo stars. Qian & Wasserburg (2001) speculate that
uranium requires the stars to have been, at one time, members of
a binary system in which the more massive component detonated in
a supernova explosion, peppering the still-evolving companions with
r-processed material. Assuming the binaries survived the explosion,
they should contain X-ray emitting compact stars. XMM-Newton observations
will test this scenario.
Publication No observations found associated with the current proposal
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 Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Eric M. Schlegel, 2005, 014806, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-qtg4jks