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- W4306180626 abstract "Abstract Time-domain spectroscopic data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) can provide accurate and high-cadence radial velocities (RVs). In this work, we search for binaries with compact components with the RV monitoring method by using the LAMOST time-domain survey of four K2 plates. Three binary systems including an unseen white dwarf or neutron star are found. For each binary system, we estimate the stellar parameters of the visible star and orbital parameters, and finally calculate the binary mass function and the minimum mass of the unseen star. No obvious double-lined feature is seen from the LAMOST medium-resolution spectra of the three sources. In addition, we found no X-ray counterpart for all these sources but UV companions for two of them. Spectral disentangling also shows no additional component with optical absorption spectra, supporting that these systems contain compact objects." @default.
- W4306180626 created "2022-10-14" @default.
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- W4306180626 date "2022-10-01" @default.
- W4306180626 modified "2023-09-30" @default.
- W4306180626 title "Binaries with Possible Compact Components Discovered from the LAMOST Time-domain Survey of Four K2 Plates" @default.
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- W4306180626 doi "https://doi.org/10.3847/1538-4357/ac8f29" @default.
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