Results 11 to 20 of about 3,518,293 (338)

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 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

Photometric study and period analysis of the contact binary XZ Leonis [PDF]

, 2015
We present multi-color CCD photometry of the neglected contact binary XZ Leo. Completely covered VRI band light curves and four times of minimum light were obtained.
Deng, Licai, Luo, Changqing, Luo, Yangping, Wang, Kun, Zhang, Xiaobin.   +4 more
core   +2 more sources

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

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

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

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 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 Wilson-Devinney (W-D) program, and the results show that V811 Cep is a median-contact binary (f ...
Xiang Gao, Kaichang Li, Xing Gao, Yuan-yuan Liu   +3 more
semanticscholar   +1 more source

The solar nebula origin of (486958) Arrokoth, a primordial contact binary in the Kuiper Belt [PDF]

Science, 2020
Examining Arrokoth The New Horizons spacecraft flew past the Kuiper Belt object (486958) Arrokoth (also known as 2014 MU69) in January 2019. Because of the great distance to the outer Solar System and limited bandwidth, it will take until late 2020 to ...
W. McKinnon, D. Richardson, J. Marohnic, J. Keane, W. Grundy, D. Hamilton, D. Nesvorný, O. Umurhan, T. Lauer, K. Singer, S. Stern, H. Weaver, J. Spencer, M. Buie, J. Moore, J. Kavelaars, C. Lisse, X. Mao, A. Parker, S. Porter, M. Showalter, C. Olkin, D. Cruikshank, H. Elliott, G. Gladstone, J. Parker, A. Verbiscer, L. Young   +27 more
semanticscholar   +1 more source