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.

arXiv commentAccepted for publication in MNRAS, 13 pages, 16 figures, 4 tables

References in corpus (25)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
• Galaxy Zoo : Morphologies derived from visual inspection of galaxies from the Sloan Digital Sky Survey
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• V1309 Scorpii: merger of a contact binary
• The Catalina Surveys Periodic Variable Star Catalog
• The ASAS-SN Catalog of Variable Stars I: The Serendipitous Survey
• A three-dimensional Galactic extinction model
• Rotation periods of 12 000 main-sequence Kepler stars: Dependence on stellar spectral type and comparison with v sin i observations
• The ROTSE-III Robotic Telescope System
• The period-luminosity relation for type II Cepheids in globular clusters
• Period and period change measurements for 143 SuperWASP eclipsing binary candidates near the short-period limit and discovery of a doubly eclipsing quadruple system
• Luminosity function of contact binaries based on the ASAS survey
• A new method to identify subclasses among AGB stars using Gaia and 2MASS photometry
• Eclipsing binary stars with a $\delta$ Scuti component
• Population synthesis of wide binary millisecond pulsars
• 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
• SuperWASP discovery and SALT confirmation of a semi-detached eclipsing binary that contains a delta Scuti star
• Investigation of the rotation-activity relation for a sample of SuperWASP and ASAS-SN field stars

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