Optical Raman OVI scattering emission lines have only been found in symbioticstars and can therefore unequivocally identify these accreting white dwarf-redgiant binaries. Moreover, because Raman OVI features are produced by thescattering of the OVI 1035 line in the UV, they likely reveal when quasi-steadyshell burning makes a symbiotic white dwarf (WD) very hot and luminous. Wepropose an XMM observation of the recently found Raman emitter LMC 1 to confirmits shell burning, which will manifest as super-soft X-ray emission or strong UVemission without rapid flickering. Supporting the link between shell burning andRaman O VI emission will enable our RAMSES II team to use a narrow-band Ramanfilter on Gemini/GMOS to find new symbiotics and probe the origin of their shell burning.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2019-09-23T08:09:44Z/2019-09-24T02:59:44Z
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.
European Space Agency, Dr Gerardo Juan Manuel Luna, 2020, 'Super-soft X-ray emission from symbiotic stars with Raman OVI scattering lines', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0p02l20
