| 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 |
| 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 |
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| 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 |
| Last Update | 2025-01-27 |
| Keywords | "xray emission mechanisms", "emission lines", "white dwarf", "time resolution", "chemical composition", "accreting material", "orbital period", "xray emission", "xray colour", "sensitive xray survey", "xray spectra", "uv data" |
| 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 |