Extremely Low Mass Ratio Contact Binaries. III. Photometric and Spectroscopic Investigations of 11 Systems
We present photometric and spectroscopic investigations of 11 totally eclipsing contact binaries with mass ratios below 0.15, classifying them as extremely low mass ratio contact binaries. The ground-based multiband light curves were modeled with PHysics Of Eclipsing BinariEs to derive the photometric parameters of the...