A Study of Twelve Potential Merger Candidate Contact Binary Systems

Abstract

Photometric observations and analysis of twelve previously poorly studied contact binary systems is presented. All show total eclipses and have extremely low mass ratios ranging from 0.072 to 0.15. Also, all show characteristics of orbital instability with mass ratios within the theoretical orbital instability range. Although none demonstrate a significant O'Connell effect at least nine of the systems have other indicators of increased chromospheric and magnetic activity.

11 Pages, 2 Figures Accepted Publications of the Astronomical Society of the Pacific (PASP)

References in corpus (10)

• Stellar Mergers Are Common
• Extremely low mass ratio contact binaries -- I. the first photometric and spectroscopic investigations of ten systems
• Structure and evolution of low-mass W UMa type systems -- II. with angular momentum loss
• New low mass ratio contact binaries in the Catalina Sky Survey
• Investigation of the Orbital Period and Mass Relations for W UMa-type Contact Systems
• CoBiToM Project -- I. Contact Binaries Towards Merging
• The First Photometric and Orbital Period Investigation of an Extremely Low Mass Ratio Contact Binary with a Sudden Period Change, TYC 4002-2628-1
• Association of Plages With Sunspots: A multi wavelength Study Using Kodaikanal Ca $\text{II}$ K and Greenwich sunspot area Data
• SuperWASP Variable Stars: Classifying Light Curves Using Citizen Science
• Photometric Investigation of the Contact Binary GU Ori with High Metallicity

Cited by in corpus (5)

• Detection of the lowest mass ratio contact binary in the universe: TYC 3801-1529-1
• A Method of Rapidly Deriving Late-type Contact Binary Parameters and Its Application in the Catalina Sky Survey
• A Study of Six Extreme Low Mass Ratio Contact Binary Systems
• Photometric and Spectroscopic Study of Two Low Mass Ratio Contact Binary Systems: CRTS J225828.7-121122 and CRTS J030053.5+230139
• Improved period variations of 32 contact binaries with rapidly decreasing periods in the Galactic Bulge