Abstract
Binary systems displaying spectroscopic segregation, whereby line spectra of the two components overlap little or not at all in wavelength, account for a small subset of LUV objects (late-type ultraviolet). Optical and ultraviolet (IUE) spectra for one such system, HD 15351+UV0225+13 (F4-5 V+sdO), are presented and a few related systems described. The role of LUV objects in establishing an absolute luminosity calibration for hot subdwarfs is emphasized, along with their significance for stellar evolution. A search strategy for additional spectroscopically segregated LUV objects is outlined.
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Darius, J. Spectroscopic segregation in binary systems. Astrophys Space Sci 99, 273–279 (1984). https://doi.org/10.1007/BF00650250
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DOI: https://doi.org/10.1007/BF00650250