31 citations · 75 across the 12 of their papers we have counts for
10 papers · 1 filter
Orbital inclination estimates for overcontact binaries using the derivatives of light curves
Shinjirou Kouzuma
The orbital inclination of an eclipsing binary is generally determined through light curve analysis. Binary parameters in the light curve analysis are typically constrained through…
Using Light Curve Derivatives to Estimate the Fill-out Factor of Overcontact Binaries
Shinjirou Kouzuma
We propose a simple method for estimating the fill-out factor of overcontact binary systems using the derivatives of light curves. We synthesized 74,431 sample light curves, coveri…
Statistical analysis of eclipsing binaries with monotonic orbital-period variations: A-type W UMa contact systems
Shinjirou Kouzuma
On the basis of monotonic orbital-period variations, this study aims to identify genuine relationships between binary parameters and the rates of mass transfer (MT), mass loss (ML)…
Mass ratio estimates for overcontact binaries using the derivatives of light curves. II. Systems with deep eclipses
Shinjirou Kouzuma
This is the second paper that proposes a simple method for estimating mass ratios using the derivatives of light curves for overcontact binaries. In the first paper (Kouzuma 2023,…
Classifying the derivatives of light curves for overcontact eclipsing binaries
Shinjirou Kouzuma
Recent studies indicate that the physical properties of eclipsing binaries can be extracted from the derivatives of their light curves. A classification scheme for the derivatives…
Mass ratio estimates for overcontact binaries using the derivatives of light curves
Shinjirou Kouzuma
The photometric mass ratios of eclipsing binaries are usually estimated by light-curve modeling with an iterative method. We propose a new method for estimating the photometric mas…
Morpho-kinematic modeling of the expanding ejecta of the extremely slow nova V1280 Scorpii
Hiroyuki Naito, Akito Tajitsu, Valèrio A. R. M. Ribeiro +10
Morphology of nova ejecta is essential for fully understanding the physical processes involved in nova eruptions. We studied the 3D morphology of the expanding ejecta of the extrem…
Starspots in contact and semi-detached binary systems
Shinjirou Kouzuma
We investigated the statistical properties of both cool and hot starspots in eclipsing binary stars. The starspot and binary parameters for contact and semi-detached systems were c…
Mass-transfer properties of overcontact systems in the Kepler eclipsing binary catalog
Shinjirou Kouzuma
We selected mass-transferring binary candidates from the catalog of Kepler eclipsing binary stars and investigated the dependence of the mass-transfer rate on several astrophysical…
Properties of Large-Amplitude Variable Stars Detected With Two Micron All Sky Survey Public Images
Shinjirou Kouzuma, Hitoshi Yamaoka
We present a catalogue of variable stars in the near-infrared wavelength detected with overlapping regions of the 2MASS public images, and discuss their properties. The investigate…