Results 21 to 30 of about 2,931,024 (350)
Photometric Study of Contact Binary AW UMa [PDF]
Journal of Astronomy and Space Sciences, 1995 BVRI observations of AW UMa were made from March to April during 13 nights in 1994 using the 35cm schmidt-Cassegrain telescope of Department of Astronomy and Space Science, Chungbuk National University.
Jo Ryeong Yim, Jang Hae Jeong
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The first photometric and orbital period investigation of an extremely low mass ratio contact binary with a sudden period change, TYC 4002-2628-1 [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Photometric observations for the totally eclipsing binary system TYC 4002-2628-1, were obtained between November 2020 and November 2021. To determine the stellar atmospheric parameters, a spectral image was taken with the 2.16 m telescope at National ...
D. Guo +8 more
semanticscholar +1 more source
V606 Cen: A Newly Formed Massive Contact Binary in a Hierarchical Triple System [PDF]
Astrophysical Journal, 2022 V606 Centauri (V606 Cen) is an early B-type close binary with an orbital period of 1.4950935 days, and its complete light curves are very difficult to observe on the ground.
F.-X. Li +5 more
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Mass-ratio distribution of contact binary stars [PDF]
Astronomy & Astrophysics, 2022 The mass ratio $q$ of a contact binary star evolves due to mass transfer, magnetic braking, and thermal relaxation oscillations to small values until it crosses a critical threshold $q_\text{min}$. When that happens, the binary undergoes the tidal Darwin
Milan Pevsta, O. Pejcha
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Astronomy & Astrophysics, 2023 Context. It is common for massive stars to engage in binary interactions. In close binaries, the components can enter a contact phase, when both stars simultaneously overflow their respective Roche lobes. While observational constraints on the stellar properties of such systems exist, the most detailed stellar evolution models that feature a contact ...
Fabry, M. +3 more
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The first photometric and spectroscopic analysis of the extremely low mass-ratio contact binary NSVS 5029961 [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We performed photometric and spectroscopic investigations of NSVS 5029961 for the first time. The new BV(RI)c-band light curves were obtained with the 1.0-m telescope at Weihai Observatory of Shandong University.
Shu Zheng, K. Li, Q. Xia
semanticscholar +1 more source
The first photometric analysis of the totally eclipsing contact binary V811 Cep [PDF]
Research in Astronomy and Astrophysics, 2021 The first photometric analysis of V811 Cep was carried out. The first complete light curves of V, R and I bands are given. The analysis was carried out by the Wilson-Devinney (W-D) program, and the results show that V811 Cep is a median-contact binary (f
X. Gao 高 +3 more
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CoBiToM project – I. Contact binaries towards merging [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Binary and multiple stellar systems are numerous in our solar neighbourhood with 80 per cent of the solar-type stars being members of systems with high order multiplicity. The Contact Binaries Towards Merging (CoBiToM) Project is a programme that focuses on contact binaries and multiple stellar systems, as a key for ...
K D Gazeas +8 more
openaire +5 more sources
Low Mass Ratio Contact Binary V410 Aur and V776 Cas - II [PDF]
Journal of Astronomy and Space Sciences, 2005 New BVR CCD light curves of the low mass ratio contact binaries, V410 Aur and V776 Cas, were observed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Astronomical Observatory.
Kyu-Dong Oh, Chun-Hwey Kim, Ho-iL Kim
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Small Mass Ratio Contact Binary GR Vir and HV Aqr [PDF]
Journal of Astronomy and Space Sciences, 2004 The absolute dimensions of low mass contact binary, GR Vir and HV Aqr were obtained using WD program from the published spectroscopic and photometric observational data.
Kyu-Dong Oh +4 more
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