Fast Derivation of Contact Binary Parameters for Large Photometric Surveys
Astronomical Journal, 2022 Thanks to an enormous release of light curves of contact binaries, it is a challenge to derive the parameters of contact binaries using the Phoebe program and the Wilson–Devinney program with the Markov chain Monte Carlo (MCMC) algorithm.
Xu Ding +6 more
semanticscholar +1 more source
The contact binary V344 Lacertae: is it a triple system? [PDF]
, 2020 The V R I $VRI$ passbands light curves of V344 Lac were presented and analyzed by using the latest version of the W-D code. The observed spectrum reveals that V344 Lac is not an A3 type but would be a later F type star according to the yielded ...
L. Liu +6 more
semanticscholar +1 more source
Chromospheric activity in bright contact binary stars [PDF]
Astronomy & Astrophysics, 2020 Context. Studying chromospheric activity of contact binaries is an effective way of revealing the magnetic activity processes of these systems. One efficient but somewhat neglected method for this purpose is to follow the changes of the Hα line profiles ...
T. Mitnyan +9 more
semanticscholar +1 more source
Detection and Seismic Study of Gravity and Rossby Mode Pulsations in Four Contact Binaries
The Astrophysical Journal, 2023 We report the detection of gravity ( g ) and Rossby ( r ) mode pulsations of four short-period eclipsing binaries, KIC 5439790, KIC 7501230, KIC 9350889, and KIC 9453192 based on the 4 yr Kepler high-precision photometry.
X. B. Zhang +3 more
doaj +1 more source
The BSN Application-I: Photometric Light Curve Solutions of Contact Binary Systems [PDF]
GalaxiesLight curve analysis of W UMa-type contact binary systems using MCMC or MC methods can be time-consuming, primarily because the repeated generation of synthetic light curves tends to be relatively slow during the fitting process.
E. Paki +2 more
semanticscholar +1 more source
Contact tracing of binary stars: Pathways to stellar mergers [PDF]
Astronomy & Astrophysics, 2023 Stellar mergers are responsible for a wide variety of phenomena such as rejuvenated blue stragglers, highly magnetised stars, spectacular transients, iconic nebulae, and stars with peculiar surface chemical abundances and rotation rates.
J. Henneco, F. Schneider, E. Laplace
semanticscholar +1 more source
Detection of the lowest mass ratio contact binary in the universe: TYC 3801-1529-1 [PDF]
Astronomy & AstrophysicsThis paper presents the first analysis of the contact binary TYC 3801-1529-1. We observed four sets of multiple bands complete light curves and one set of radial velocity curve of the primary component.
Kai Li +9 more
semanticscholar +1 more source
The W-subtype active contact binary PZ UMa with a possible more massive tertiary component [PDF]
Nippon Tenmon Gakkai obun kenkyu hokoku, 2019 Two sets of multiple-color ($B, V, R_c, I_c$) light curves of PZ UMa were observed in dependently with the 2.4 meter telescope at the Thai National Observatory and the 1 meter telescope at Yunnan Observatories.
Xiao Zhou, B. Soonthornthum
semanticscholar +1 more source
YZ Phoenicis: a very short period K-type contact binary with variation of the O’Connell effect and orbital period change [PDF]
Nippon Tenmon Gakkai obun kenkyu hokoku, 2019 YZ Phe is a very short-period contact binary (Sp. = K2 V) with an orbital period of 0.2347 d near the short period limit (0.22 d). We present the complete light curves which photometric data were obtained from the 60 cm telescope of PROMPT-8 at CTIO in
T. Sarotsakulchai +9 more
semanticscholar +1 more source
Period Change of the Contact Binary AH Tauri [PDF]
Journal of Astronomy and Space Sciences, 2004 New BVRI photometric observations of the contact binary AH Tau were performed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Optical Astronomy Observatory during seven nights from September to December, 2001. A total of 144 times of minima
Dongjoo Lee +5 more
doaj +1 more source