A dataset provided by the European Space Agency

Name 076172
Title Identifying the companions of chemically peculiar red giants


DOI https://doi.org/10.5270/esa-urm6jhs
Author Dr Gerardo Luna
Description Although the peculiar surface abundances of Tc-poor S stars in six symbiotics binaries suggest that the compact object should be a white dwarf, the X-ray spectrum from at least one member of this class points to the presence of a neutron star. For that object, the X-ray spectrum can be modeled as due Comptonized black-body emission with the seed-photons coming from the neutron star. To determine if chemically peculiar symbiotics host a white dwarf or a neutron star, we propose to obtain XMM-Newton X-ray spectra of four such symbiotics. This proposal has implications for our understanding of the origin of polluted atmospheres and of binary stellar evolution.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2016-01-27T21:27:48Z/2016-01-28T17:11:08Z
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 2017-02-15T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2017-02-15T23:00:00Z, 076172, 17.56_20190403_1200. https://doi.org/10.5270/esa-urm6jhs