A dataset provided by the European Space Agency

Proposal ID 020289
Title A SURVEY OF HELIUM ACCRETING WHITE DWARFS
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0202890101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0202890201

DOI https://doi.org/10.5270/esa-lsly8yg
Principal Investigator, PI Dr GAVIN RAMSAY
Abstract We propose to carry out a survey of AM CVn systems -- close binaries in which awhite dwarf is accreting material from a white dwarf. This will be the mostsensitive X-ray survey of such objects. We will measure their luminosities anddetermine if they correlate with orbital period and X-ray colour. The source ofX-ray emission in these systems is not known. These observations will allow usto make significant progress in answering this question. We will also search foremission lines in the X-ray spectra - this will allow us to constrain thechemical composition of these systems. These observations will provide the firstsimultaneous X-ray and UV data with high time resolution: this is important inrelating the UV and X-ray emission mechanisms.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-12-28T05:26:54Z/2004-01-28T23:28:15Z
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 2005-02-20T00:00:00Z
Keywords "uv data", "xray colour", "accreting material", "sensitive xray survey", "emission lines", "time resolution", "xray emission mechanisms", "white dwarf", "xray emission", "xray spectra", "chemical composition", "orbital period"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr GAVIN RAMSAY, 2005, 'A SURVEY OF HELIUM ACCRETING WHITE DWARFS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lsly8yg