Short period eclipsing binary candidates identified using SuperWASP

Abstract

We present light curves and periods of 53 candidates for short period eclipsing binary stars identified by SuperWASP. These include 48 newly identified objects with periods <2x10^4 seconds (~0.23d), as well as the shortest period binary known with main sequence components (GSC2314-0530 = 1SWASP J022050.85+332047.6) and four other previously known W UMa stars (although the previously reported periods for two of these four are shown to be incorrect). The period distribution of main sequence contact binaries shows a sharp cut-off at a lower limit of around 0.22d, but until now, very few systems were known close to this limit. These new candidates will therefore be important for understanding the evolution of low mass stars and to allow investigation of the cause of the period cut-off.

5 pages of text, 18 pages of figures, 1 table. Accepted for publication in A&A. (Slight formatting modifications to previous uploaded version)

References in corpus (9)

• The first WASP public data release
• New periodic variable stars coincident with ROSAT sources discovered using SuperWASP
• Physical parameters of 62 eclipsing binary stars using the ASAS-3 data$-$I
• The short period end of the contact binary period distribution based on the All Sky Automated Survey (ASAS)
• Angular momentum and mass evolution of contact binaries
• Masses and angular momenta of contact binary stars
• The shortest period field contact binary
• GSC 2314-0530: the shortest-period eclipsing system with dMe components
• 1318 New Variable Stars in a 0.25 Square Degree Region of the Galactic Plane

Cited by in corpus (45)

• The Catalina Surveys Periodic Variable Star Catalog
• Planetary Construction Zones in Occultation: Discovery of an Extrasolar Ring System Transiting a Young Sun-like Star and Future Prospects for Detecting Eclipses by Circumsecondary and Circumplanetary Disks
• Period and period change measurements for 143 SuperWASP eclipsing binary candidates near the short-period limit and discovery of a doubly eclipsing quadruple system
• High frequency A-type pulsators discovered using SuperWASP
• The first light curve modeling and orbital period change investigation of nine contact binaries around the short period cut-off
• Contact binaries at the short period cut-off I. statistics and the first photometric investigations of ten totally eclipsing systems
• Discovery of a stripped red giant core in a bright eclipsing binary system
• The short-period limit of contact binaries
• Four ultra-short period eclipsing M-dwarf binaries in the WFCAM Transit Survey
• Physical Parameters of Late-type Contact Binaries in the Northern Catalina Sky Survey
• Ultra-short Period Binaries from the Catalina Surveys
• Magnetic braking saturates: evidence from the orbital period distribution of low-mass detached eclipsing binaries from ZTF
• Period decrease in three SuperWASP eclipsing binary candidates near the short-period limit
• Ultrashort-period MS eclipsing systems. New observations and light curve solutions of six NSVS binaries
• Pan-Planets: Searching for hot Jupiters around cool dwarfs
• The Near-Ultraviolet Luminosity Function of Young, Early M-Type Dwarf Stars
• CoBiToM Project -- I. Contact Binaries Towards Merging
• Orbital period changes and the higher-order multiplicity fraction amongst SuperWASP eclipsing binaries
• Parameters of two low-mass contact eclipsing binaries near the short-period limit
• Suppressed phase variations in a high amplitude rapidly oscillating Ap star pulsating in a distorted quadrupole mode
• Variability, periodicity and contact binaries in WISE
• M4 Core Project with HST - III. Search for variable stars in the primary field
• CoBiToM Project -- II: Evolution of contact binary systems close to the orbital period cut-off
• A New Yield Simulator for Transiting Planets and False Positives: Application to the Next Generation Transit Survey
• The doubly eclipsing quintuple low-mass star system 1SWASP J093010.78+533859.5
• Absolute Magnitude Calibration for W UMa-Type Systems Based on Gaia Data
• Case AD, AR, and AS binary evolution and their possible connections with W UMa binaries
• One, two or three stars? An investigation of an unusual eclipsing binary candidate undergoing dramatic period changes
• Orbital solution and evolutionary state for the eclipsing binary 1SWASP J080150.03+471433.8
• A Photometric Study of Four Recently Discovered Contact Binaries: 1SWASP J064501.21+342154.9, 1SWASP J155822.10-025604.8, 1SWASP J212808.86+151622.0 and UCAC4 436-062932
• Three Ultra-short Period Contact Eclipsing Binary Systems Mined from Massive Astronomical Surveys
• Photometric study of three ultrashort-period contact binaries
• A Method of Rapidly Deriving Late-type Contact Binary Parameters and Its Application in the Catalina Sky Survey
• YZ Phe: an active contact binary with variation of the O'Connell effect and orbital period change
• Light curve analysis of six totally eclipsing W UMa binaries
• ASAS J174406+2446.8 is identified as a marginal-contact binary with a possible cool third body
• Light curve solutions of six eclipsing binaries at the lower limit of periods of the W UMa stars
• Two Different Weak Modulations in ab-type RR Lyrae Variable V838 Cyg, and Potential Influence of Metal Abundance on Blazhko Modulation
• Photometric light curve solutions of three ultra-short period eclipsing binaries
• Short-Period Variables in TESS Full-Frame Image Light Curves Identified via Convolutional Neural Networks
• New CCD photometric observation of the W-UMa eclipsing binary system 1swasp j160156.04+202821.6
• Investigating stellar variability in the open cluster region NGC 381
• Irregular Repeating Tidal Disruption Events due to Diffusive Tides
• Fast radio bursts by stellar wind microlensing of a faint background source
• Light Curve Modelling and Evolutionary Status of the Short Period Binary 1SWASP J092328.76+435044