Photometric and Spectroscopic Study of Two Low Mass Ratio Contact Binary Systems: CRTS J225828.7-121122 and CRTS J030053.5+230139

Abstract

The study reports photometric and spectroscopic observations of two recently recognised contact binary systems. Both systems show total eclipses and analysis of the light curves indicate both have a very low mass ratios of less than 0.3. We derive absolute parameters from colour and distance based calibrations and show that although both have low mass ratios they are likely to be in a stable orbit and unlikely to merge. In other respects both systems have characteristics similar to other contact binaries with the secondary larger and brighter than main sequence counterparts and we also find that the secondary is considerably denser than the primary in both systems.

10 pages. 3 Figures. 1 Table Accepted - Research in Astronomy and Astrophysics (RAA)

References in corpus (8)

• The Zwicky Transient Facility: Data Processing, Products, and Archive
• VOSA: Virtual Observatory SED Analyzer. An application to the Collinder 69 open cluster
• Extremely low mass ratio contact binaries -- I. the first photometric and spectroscopic investigations of ten systems
• New low mass ratio contact binaries in the Catalina Sky Survey
• The First Photometric and Orbital Period Investigation of an Extremely Low Mass Ratio Contact Binary with a Sudden Period Change, TYC 4002-2628-1
• CoBiToM Project -- I. Contact Binaries Towards Merging
• Photometric Analysis of Three Potential Red Nova Progenitors
• Photometric Investigation of the Contact Binary GU Ori with High Metallicity