The ZTF Source Classification Project: II. Periodicity and variability processing metrics

Abstract

The current generation of all-sky surveys is rapidly expanding our ability to study variable and transient sources. These surveys, with a variety of sensitivities, cadences, and fields of view, probe many ranges of timescale and magnitude. Data from the Zwicky Transient Facility (ZTF) yields an opportunity to find variables on timescales from minutes to months. In this paper, we present the codebase, ztfperiodic, and the computational metrics employed for the catalogue based on ZTF's Second Data Release. We describe the publicly available, graphical-process-unit optimized period-finding algorithms employed, and highlight the benefit of existing and future graphical-process-unit clusters. We show how generating metrics as input to catalogues of this scale is possible for future ZTF data releases. Further work will be needed for future data from the Vera C. Rubin Observatory's Legacy Survey of Space and Time.

References in corpus (23)

• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The generalised Lomb-Scargle periodogram. A new formalism for the floating-mean and Keplerian periodograms
• Laser Interferometer Space Antenna
• The Zwicky Transient Facility: Data Processing, Products, and Archive
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• The Zwicky Transient Facility: Science Objectives
• The Catalina Surveys Periodic Variable Star Catalog
• Assessing statistical significance of periodogram peaks
• The Zwicky Transient Facility: Surveys and Scheduler
• The Zwicky Transient Facility: Observing System
• Stellar-mass black holes in young massive and open stellar clusters and their role in gravitational-wave generation
• Stellar-mass black holes in young massive and open stellar clusters and their role in gravitational-wave generation II
• OGLE-IV: Fourth Phase of the Optical Gravitational Lensing Experiment
• BGLS: A Bayesian formalism for the generalised Lomb-Scargle periodogram
• Orbital Decay in a 20 Minute Orbital Period Detached Binary with a Hydrogen Poor Low Mass White Dwarf
• Machine learning search for variable stars
• A new class of Roche lobe-filling hot subdwarf binaries
• A new class of pulsating hot subdwarfs
• 2900 square degree search for the optical counterpart of short gamma-ray burst GRB 180523B with the Zwicky Transient Facility
• The ZTF Source Classification Project: I. Methods and Infrastructure
• Constraining the Physics of AM Canum Venaticorum Systems with the Accretion Disk Instability Model
• The VVV Infrared Variability Catalog (VIVA-I)
• Color and Variability Characteristics of Point Sources in the Faint Sky Variability Survey

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• Removing Aliases in Time-Series Photometry
• Cyclotron emitting magnetic white dwarfs in post common envelope binaries discovered with the Zwicky Transient Facility
• A Catalog of LAMOST Variable Sources Based on Time-domain Photometry of ZTF
• Identifying and characterising the population of hot sub-luminous stars with multi-colour MeerLICHT data
• 200,000+ Deep Learning-inferred Periods of Stellar Variability from the All-Sky Automated Survey for Supernovae
• The Solar System Notification Alert Processing System (SNAPS): Asteroid Population Outlier Detection
• The OmegaWhite Survey for Short Period Variable Stars VI. Open Clusters
• Multi-messenger parameter inference of gravitational-wave and electromagnetic observations of white dwarf binaries
• GPU-Enabled Searches for Periodic Signals of Unknown Shape