| Name | 086284 |
| Title | A search for symbiotic activity in CH-stars |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0862840101 |
| DOI | https://doi.org/10.57780/esa-rqxrfo7 |
| Author | Prof Thomas Maccarone |
| Description | We propose to observe 4 CH stars. These are carbon-enhanced Population II giant stars nearly all of which have white dwarf binaries, which are responsible for their unusual abundances. Based on their orbital parameters, distances, and stellar parameters, we have identified the best candidates for showing X-ray emission. None of these stars has yet been observed by anything more sensitive than ROSAT, but we anticipate that they should be detectable in a modest amount of XMM time. Discovering X-ray emission will open up a new understanding of the stellar winds from these stars, and of the otherwise hard-to-measure masses of their white dwarfs. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2020-12-01T09:27:02Z/2021-04-22T11:37:47Z |
| Version | 19.16_20210326_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 | 2022-05-22T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2022-05-22T00:00:00Z, 086284, 19.16_20210326_1200. https://doi.org/10.57780/esa-rqxrfo7 |