CCD photometry of the eclipsing binary RU UMi

Details CCD photometry of the eclipsing binary RU UMi CCD photometry of the eclipsing binary RU UMi

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.260..478b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 260, no. 3, p. 478-490.

Physics

26

Charge Coupled Devices, Eclipsing Binary Stars, Stellar Spectrophotometry, Light Curve, Mass Ratios, Stellar Physics

Scientific paper

We present a new high-precision R-band light curve of the eclipsing binary RU UMi. These observations have been obtained with a new CCD camera system on the 0.95-m James Gregory Telescope in St Andrews. This equipment and the associated reduction software is described. Light-curve analyses indicate that a mass ratio in the range of 0.34-0.40 is probable. On this basis, it would appear that a mass transfer event has taken place and that RU UMi is presently in a detached configuration and consists of an apparently main-sequence FOV star and a K 2-5 star which is both overluminous and oversized for its mass.

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