Name | 014859 |
Title | The metallic abundances in the polar BY Cam |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0148590201 |
DOI | https://doi.org/10.5270/esa-rpgqdfn |
Author | Dr Jean-Marc Bonnet-Bidaud |
Description | The source BY Cam is unique among all highly magnetized cataclysmic variables (polars) in showing a significant asynchronism between rotation and orbital periods and very peculiar C and N emission line ratios in the UV, suggesting abnormal CNO abundances. Recent FUSE observations in the far UV have now also revealed the weakness of the resonance OVI line. The origin of this very peculiar line spectrum is unknown. BY Cam may indeed represent a key system for our understanding of CNO enrichment and nova phenomenon onto magnetized white dwarfs. We propose to observe the source with XMM to derive for the first time a detailed X-ray line spectrum with RGS reaching the important metallic lines and to follow its variability with EPIC.\\ |
Publication | No observations found associated with the current proposal |
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2003-08-30T05:15:43Z/2003-10-13T21:58:59Z |
Version | PPS_NOT_AVAILABLE |
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 | 2004-10-31T00:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Jean-Marc Bonnet-Bidaud, 2004, 014859, PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-rpgqdfn |