SuperWASP Variable Stars: Classifying Light Curves Using Citizen Science

Abstract

We present the first analysis of results from the SuperWASP Variable Stars Zooniverse project, which is aiming to classify 1.6 million phase-folded light curves of candidate stellar variables observed by the SuperWASP all sky survey with periods detected in the SuperWASP periodicity catalogue. The resultant data set currently contains $>$1 million classifications corresponding to $>$500,000 object-period combinations, provided by citizen scientist volunteers. Volunteer-classified light curves have $\sim$89 per cent accuracy for detached and semi-detached eclipsing binaries, but only $\sim$9 per cent accuracy for rotationally modulated variables, based on known objects. We demonstrate that this Zooniverse project will be valuable for both population studies of individual variable types and the identification of stellar variables for follow up. We present preliminary findings on various unique and extreme variables in this analysis, including long period contact binaries and binaries near the short-period cutoff, and we identify 301 previously unknown binaries and pulsators. We are now in the process of developing a web portal to enable other researchers to access the outputs of the SuperWASP Variable Stars project.

Accepted for publication in MNRAS, 13 pages, 16 figures, 4 tables

References in corpus (11)

• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• The Catalina Surveys Periodic Variable Star Catalog
• The period-luminosity relation for type II Cepheids in globular clusters
• Luminosity function of contact binaries based on the ASAS survey
• Eclipsing binary stars with a $\delta$ Scuti component
• Planet Hunters TESS II: Findings from the first two years of TESS
• Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP
• Orbital period changes and the higher-order multiplicity fraction amongst SuperWASP eclipsing binaries
• The doubly eclipsing quintuple low-mass star system 1SWASP J093010.78+533859.5
• The SuperWASP catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect candidates