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X-rays and TESS observations of symbiotic binary stars

Nuñez, N. E.; Mukai, K.; Sokoloski, J. L. +5 more

Symbiotic stars are strongly interacting binaries composed of a white dwarf accreting from its red giant companion. We studied five symbiotics stars: BD~Cam, V1261~Ori, NQ~Gem, CD~-27~8661, CD~-36~8436 using observations from the Swift/XRT and XMM-Newton satellites in X-rays and from TESS in the optical. The X-ray spectra were fit with absorbed op…