ZZ Piscis Austrinus (ZZ PsA): a bright red nova progenitor and the instability mass ratio of contact binary stars [PDF]
Monthly notices of the Royal Astronomical Society, 2020 ZZ Piscis Austrinus (ZZ PsA) is a neglected bright southern contact binary system with maximum V magnitude of 9.26. We present the first multiband photometric analysis and find the system to be in deep contact (>95 per cent) with an extremely low mass ...
S. Wadhwa +6 more
semanticscholar +1 more source
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
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 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
openalex +3 more sources
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
First photometric study of ultrashort-period contact binary 1SWASP J140533.33+114639.1 [PDF]
, 2018 In this paper, CCD photometric light curves for the short-period eclipsing binary 1SWASP J140533.33+114639.1 (hereafter J1405) in the BV R bands are presented and analyzed using the 2013 version of the Wilson-Devinney (W-D) code.
Bin Zhang +9 more
openalex +3 more sources
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
The low mass ratio contact binary system V728 Herculis [PDF]
, 2015 We present the orbital period study and the photometric analys of the contact binary system V728 Her. Our orbital period analysis shows that the period of the system increases (dP/dt=1.92x10^-7dyr^-1) and the mass transfer rate from the less massive ...
Erkan, Naci, Ulas, Burak
core +5 more sources
Ultra-short Period Binaries from the Catalina Surveys [PDF]
, 2014 We investigate the properties of 367 ultra-short period binary candidates selected from 31,000 sources recently identified from Catalina Surveys data. Based on light curve morphology, along with WISE, SDSS and GALEX multi-colour photometry, we identify ...
Abraham, S. +12 more
core +2 more sources
TY Pup: A Low-mass-ratio and Deep Contact Binary as a Progenitor Candidate of Luminous Red Novae [PDF]
Astronomical Journal, 2018 TY Pup is a well-known bright eclipsing binary with an orbital period of 0.8192 days. New light curves in B, V, (RI)C bands were obtained with the 0.61 m reflector robotic telescope (PROMPT-8) at CTIO in Chile during 2015 and 2017.
T. Sarotsakulchai +8 more
semanticscholar +1 more source