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arxiv: 0810.3183 · v1 · submitted 2008-10-17 · 🌌 astro-ph

DDO spectroscopic survey of MOST variable stars

classification 🌌 astro-ph
keywords starsspectroscopicbinarysurveythemvariablevelocitiesanalysis
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A spectroscopic support survey of 103 objects observed by the MOST satellite is presented; 96 are variable stars with 83 of them being new MOST variable-star detections or stars with variability types verified and/or modified on the basis of the MOST data. Analysis of 241 medium-resolution spectra using the broadening-functions formalism yielded radial velocities, projected rotational velocities (for 31 targets for which it was possible) and spectral type estimates. Seven new spectroscopic binaries were discovered; orbital solutions are given for two of them (HD73709, and GSC 0814-0323). The visual binary HD46180 was found to be composed of two close binary stars (eclipsing and non-eclipsing one) very probably forming a physical quadruple system.

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