Journal Article

DDO spectroscopic survey of MOST variable stars*

Theodor Pribulla, Slavek M. Rucinski, Rainer Kuschnig, Waldemar Ogłoza and Bogumil Pilecki

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 392, issue 2, pages 847-854
Published in print January 2009 | ISSN: 0035-8711
Published online December 2008 | e-ISSN: 1365-2966 | DOI:
DDO spectroscopic survey of MOST variable stars*

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A spectroscopic support survey of 103 objects observed by the Microvariability and Oscillations of STars (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. The analysis of 241 medium-resolution spectra using the broadening-function 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 (HD 73709 and GSC 0814−0323). The visual binary HD 46180 was found to be composed of two close binary stars (eclipsing and non-eclipsing one), very probably forming a physical quadruple system.

Keywords: binaries: close; binaries: eclipsing; binaries: spectroscopic; stars: variables: other

Journal Article.  4158 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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