DDO spectroscopic survey of MOST variable stars

Autor(en)

Theodor Pribulla, Slavek M. Rucinski, Rainer Kuschnig

Abstrakt

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.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

University of Toronto

Journal

Monthly Notices of the Royal Astronomical Society

Band

392

Seiten

847-854

Anzahl der Seiten

8

ISSN

0035-8711

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/9e21bce8-8f0e-432a-8bc1-8d1764341cf8