A photometric study of two contact binaries: CRTS J025408.1+265957 and CRTS J012111.1+272933
arXiv:2207.06255 · doi:10.1088/1674-4527/ac80ec
Abstract
We performed new photometric observations for two contact binaries (i.e., CRTS J025408.1+265957 and CRTS J012111.1+272933), which were observed by the 1.0-m telescope at Xingjiang Astronomical Observatory. From our light curves and several survey data, we derived several sets of photometric solutions. We found that CRTS J025408.1+265957 and CRTS J012111.1+272933 were Aand W-type W UMa, respectively. The results imply that the spot migrates or disappears in two contact binaries, which were identified by chromospheric activity emissions (e.g. Hα emission) from LAMOST spectra. From the O-C curves, the orbital periods of two contact binaries may be increasing, which is interpreted by the mass transfer from the less massive component to the more massive one. With mass transferring, two contact binaries may evolve from the contact configurations to semi-detected ones as predicted by the theory of thermal relaxation oscillation.
arXiv comment16 pages, 10 figures
References in corpus (36)
- Array Programming with NumPy
- Astropy: A Community Python Package for Astronomy
- Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
- PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
- The Transiting Exoplanet Survey Satellite
- Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
- Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars
- The Zwicky Transient Facility: System Overview, Performance, and First Results
- Evolution of binary stars and the effect of tides on binary populations
- Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3
- Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
- Evolution of asymptotic giant branch stars II. Optical to far-infrared isochrones with improved TP-AGB models
- First Results from the Catalina Real-time Transient Survey
- Achieving better than 1 minute accuracy in the Heliocentric and Barycentric Julian Dates
- astroquery: An Astronomical Web-Querying Package in Python
- Improving PARSEC models for very low mass stars
- PARSEC evolutionary tracks of massive stars up to at metallicities 0.00010.04
- New PARSEC evolutionary tracks of massive stars at low metallicity: testing canonical stellar evolution in nearby star forming dwarf galaxies
- The Catalina Surveys Periodic Variable Star Catalog
- On the use of empirical bolometric corrections for stars
- The ASAS-SN Catalog of Variable Stars I: The Serendipitous Survey
- The first WASP public data release
- The ASAS-SN Catalog of Variable Stars II: Uniform Classification of 412,000 Known Variables
- Dynamical evolution of active detached binaries on log Jo - log M diagram and contact binary formation
- On the origin of W UMa type Contact binaries - a new method for computation of initial masses
- A recalibration of optical photometry: Tycho-2, Strömgren, and Johnson systems
- Photometric study and absolute parameters estimation of six totally eclipsing contact binaries
- The dynamical stability of W Ursae Majoris-type systems
- Origin of W UMa-type contact binaries - age and orbital evolution
- Magnetic Activity of F-, G-, and K-type Stars in the LAMOST-Kepler Field
- Indirect evidence for short period magnetic cycles in W UMa stars
- The ASAS-SN Catalog of Variable Stars VII: Contact Binaries are Different Above and Below the Kraft Break
- The ASAS-SN Catalog of Variable Stars IV: Periodic Variables in the APOGEE Survey
- The Wide-field Photometric System of the Nanshan One-meter Telescope
- A Catalog of Short Period Spectroscopic and Eclipsing Binaries Identified from the LAMOST & PTF Surveys
- HD 63021: Chromospheric Activity and Mass Transfer in a Close Binary