Results 1 to 10 of about 2,923,293 (310)

CCD Photometry of Contact Binary WZ Cephei [PDF]

Journal of Astronomy and Space Sciences, 2008
We present the full BVR light curves and five times of minima of WZ Cep to provides a complete photometric solution and to confirm the long term variation of the light curves.
Woo-Baik Lee, Young-Woon Kang, Kyu-Dong Oh   +2 more
doaj   +3 more sources

A contact binary satellite of the asteroid (152830) Dinkinesh. [PDF]

Nature
Asteroids with diameters less than about 5 km have complex histories because they are small enough for radiative torques (that is, YORP, short for the Yarkovsky–O’Keefe–Radzievskii–Paddack effect)1 to be a notable factor in their evolution2.
Levison HF, Marchi S, Noll KS, Spencer JR, Statler TS, Bell JF, Bierhaus EB, Binzel R, Bottke WF, Britt D, Brown ME, Buie MW, Christensen PR, Dello Russo N, Emery JP, Grundy WM, Hahn M, Hamilton VE, Howett C, Kaplan H, Kretke K, Lauer TR, Manzoni C, Marschall R, Martin AC, May BH, Mottola S, Olkin CB, Pätzold M, Parker JW, Porter S, Preusker F, Protopapa S, Reuter DC, Robbins SJ, Salmon J, Simon AA, Stern SA, Sunshine JM, Wong I, Weaver HA, Adam C, Ancheta S, Andrews J, Anwar S, Barnouin OS, Beasley M, Berry KE, Birath E, Bolin B, Booco M, Burns R, Campbell P, Carpenter R, Crombie K, Effertz M, Eifert E, Ellis C, Faiks P, Fischetti J, Fleming P, Francis K, Franco R, Freund S, Gallagher C, Geeraert J, Gobat C, Gorgas D, Granat C, Gray S, Haas P, Harch A, Hegedus K, Isabelle C, Jackson B, Jacob T, Jennings S, Kaufmann D, Keeney BA, Kennedy T, Lauffer K, Lessac-Chenen E, Leonard R, Levine A, Lunsford A, Martin T, McAdams J, Mehall G, Merkley T, Miller G, Montanaro M, Montgomery A, Murphy G, Myers M, Nelson DS, Ocampo A, Olds R, Pelgrift JY, Perkins T, Pineau J, Poland D, Ramanan V, Rose D, Sahr E, Short O, Solanki I, Stanbridge D, Sutter B, Talpas Z, Taylor H, Treiu B, Vermeer N, Vincent M, Wallace M, Weigle G, Wibben DR, Wiens Z, Wilson JP, Zhao Y.   +118 more
europepmc   +3 more sources

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.
Jan Henneco, F. R. N. Schneider, E. Laplace   +2 more
openalex   +3 more sources

The Strength and Shapes of Contact Binary Objects

The Astrophysical Journal Letters
While contact binary objects are common in the solar system, their formation mechanism is unclear. In this work we examine several contact binaries and calculate the necessary strength parameters that allow the two lobes to merge without the smaller of ...
Alex J. Meyer, Daniel J. Scheeres
doaj   +2 more sources

A Method of Rapidly Deriving Late-type Contact Binary Parameters and Its Application in the Catalina Sky Survey

The Astrophysical Journal Supplement Series
With the continuous development of large optical surveys, a large number of light curves of late-type contact binary systems (CBs) have been released.
JinLiang Wang, Xu Ding, JiaJia Li, JianPing Xiong, QiYuan Cheng, KaiFan Ji   +5 more
doaj   +2 more sources

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, Sheng-Bang Qian, Ri Michel, Boonrucksar Soonthornthum, Li-Ying Zhu   +4 more
openalex   +3 more sources

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, K. Li, 1. F. Liu, Huaikuan Xia, Xing Gao, Xiang Gao, Xinfa Chen, D. Gao, Guo-You Sun   +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, W. Liao, S. Qian, E. Fernández Lajús, J. Zhang, E. Zhao   +5 more
semanticscholar   +1 more source

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
semanticscholar   +1 more source

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