Zwicky Transient Facility and Globular Clusters: the Period-Luminosity and Period-Luminosity-Color Relations for Late-Type Contact Binaries

Abstract

In this work, we aimed to derive the $gri$-band period-luminosity (PL) and period-luminosity-color (PLC) relations for late-type contact binaries, for the first time, located in the globular clusters, using the homogeneous light curves collected by the Zwicky Transient Factory (ZTF). We started with 79 contact binaries in 15 globular clusters, and retained 30 contact binaries in 10 globular clusters that have adequate number of data points in the ZTF light curves and unaffected by blending. Magnitudes at mean and maximum light of these contact binaries were determined using a fourth-order Fourier expansion, while extinction corrections were done using the {\tt Bayerstar2019} 3D reddening map together with adopting the homogeneous distances to their host globular clusters. After removing early-type and "anomaly" contact binaries, our derived $gri$-band PL and period-Wesenheit (PW) relations exhibit a much larger dispersion with large errors on the fitted coefficients. Nevertheless, the $gr$-band PL and PW relations based on this small sample of contact binaries in globular clusters were consistent with those based on a larger sample of nearby contact binaries. Good agreements of the PL and PW relations suggested both samples of contact binaries in the local Solar neighborhood and in the distant globular clusters can be combined and used to derive and calibrate the PL, PW and PLC relations. The final derived $gr$-band PL, PW and PLC relations were much improved than those based on the limited sample of contact binaries in the globular clusters.

26 pages, 4 Tables and 16 Figures; AJ Accepted

References in corpus (31)

• Array Programming with NumPy
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Dartmouth Stellar Evolution Database
• The Zwicky Transient Facility: Data Processing, Products, and Archive
• The Zwicky Transient Facility: Science Objectives
• The Zwicky Transient Facility Catalog of Periodic Variable Stars
• SkyMapper Southern Survey: Second Data Release (DR2)
• Automated supervised classification of variable stars I. Methodology
• Physical Properties and Catalogue of EW-type Eclipsing Binaries Observed by LAMOST
• Optical and Near-Infrared UBVRIJHK Photometry for the RR Lyrae stars in the Nearby Globular Cluster M4 (NGC 6121)
• The EPOCH Project: I. Periodic variable stars in the EROS-2 LMC database
• Luminosity function of contact binaries based on the ASAS survey
• The unblinking eye on the sky
• The ACS Survey of Galactic Globular Clusters XIV: Bayesian Single-Population Analysis of 69 Globular Clusters
• Eclipsing binaries in the MACHO database: New periods and classifications for 3031 systems in the Large Magellanic Cloud
• Contact Binaries as Viable Distance Indicators: New, Competitive (V)JHKs Period-Luminosity Relations
• Eclipsing binary stars in the Large Magellanic Cloud. Results from the EROS-2, OGLE and VMC surveys
• A DECam View of the Diffuse Dwarf Galaxy Crater II: Variable Stars
• A new study of the variable star population in the Hercules globular cluster (M13; NGC 6205)
• M4 Core Project with HST - III. Search for variable stars in the primary field
• Absolute Magnitude Calibration for W UMa-Type Systems Based on Gaia Data
• A Catalog of Short Period Spectroscopic and Eclipsing Binaries Identified from the LAMOST & PTF Surveys
• Properties of M31. V: 298 Eclipsing Binaries from PAndromeda
• Model computations of blue stragglers and W UMa-type stars in globular clusters
• ASAS Eclipsing Binaries with Observed High Period Change Rates
• New absolute magnitude calibrations for W Ursa Majoris type binaries
• The globular cluster M10: Reassessment of stellar membership, distance and age using its variable and HB stars
• Variable stars in the bulge globular cluster NGC 6401
• VR CCD photometry of variable stars in globular cluster NGC 4147
• NGC 6712: the variable star population of a tidally disrupted globular cluster
• The Clusters AgeS Experiment (CASE). Variable stars in the field of the globular cluster NGC 6362

Cited by in corpus (6)

• Zwicky Transient Facility and Globular Clusters: The Period-Luminosity and Period-Wesenheit Relations for Type II Cepheids
• Zwicky Transient Facility and Globular Clusters: The Period-Luminosity and Period-Wesenheit Relations for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample
• LTD064402+245919: A Subgiant with a 1-3 M${}_{\odot }$ Undetected Companion Identified from LAMOST-TD Data
• Detecting and Monitoring Tidal Dissipation of Hot Jupiters in the Era of SiTian
• Period-Luminosity-Metallicity-Color Relations of Late-type Contact Binaries in the Big Data Era
• Zwicky Transient Facility and Globular Clusters: The RR Lyrae gri-Band Period-Luminosity-Metallicity and Period-Wesenheit-Metallicity Relations