Results 51 to 60 of about 84,499 (289)

Twin Binaries: Studies of Stability, Mass Transfer, and Coalescence

, 2011
Motivated by suggestions that binaries with almost equal-mass components ("twins") play an important role in the formation of double neutron stars and may be rather abundant among binaries, we study the stability of synchronized close and contact ...
Belczynski, Bethe, Chandrasekhar, Chandrasekhar, D'souza, Dan, Eggleton, F. A. Rasio, Habets, Hachisu, Hillwig, Hillwig, Hut, J. C. Lombardi, Jacoby, K. Gearity, K. L. Dooley, Krumholz, Lee, Motl, Nice, Paczyiński, Pinsonneault, Pols, Rasio, Rasio, Santander-Garcia, Stairs, Thorsett, V. Kalogera, W. Holtzman, Wang, Webbink, Weisberg, Willems, Willems, Wong   +36 more
core   +1 more source

General Relativistic Models of Binary Neutron Stars in Quasiequilibrium [PDF]

, 1997
We perform fully relativistic calculations of binary neutron stars in corotating, circular orbit. While Newtonian gravity allows for a strict equilibrium, a relativistic binary system emits gravitational radiation, causing the system to lose energy and ...
A. D. Wiseman, A. P. Lightman, C. S. Kochanek, D. Lai, D. Lai, D. Lai, F. A. Rasio, F. A. Rasio, F. A. Rasio, G. B. Cook, G. B. Cook, G. B. Cook, G. B. Cook, H. Komatsu, I. Hachisu, I. Hachisu, I. Hachisu, J. B. Hartle, J. C. Lombardi, J. H. Taylor, J. L. Friedman, J. M. Bardeen, J. M. Bowen, J. M. Bowen, J. R. Wilson, J. R. Wilson, J. R. Wilson, J. W. York, Jr., K. Taniguchi, L. Bildsten, L. Blanchet, L. E. Kidder, M. A. Scheel, M. Ruffert, M. Shibata, M. Shibata, M. Shibata, M. Shibata, Niall Ó Murchadha, P. R. Brady, R. Arnowitt, S. A. Teukolsky, S. Chandrasekhar, S. E. Thorsett, S. L. Shapiro, S. L. Shapiro, T. W. Baumgarte, T. W. Baumgarte, T. W. Baumgarte, W. H. Press, X. Zhuge, X. Zhuge   +51 more
core   +2 more sources

A Method of Measuring Gamma-Velocities of Contact Binary Stars [PDF]

International Astronomical Union Colloquium, 1999
AbstractGamma-velocities of bright contact binary stars (VW Cep, SW Lac, AB And, OO Aql) have been computed using cross-correlation. The template spectra were synthesized with a newly developed computer code WGMODEL.
G. Kaszás, J. Vinkó, G. Fürész
openaire   +1 more source

Patterns of Postictal Abnormalities in Relation to Status Epilepticus in Adults

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Abnormalities on peri‐ictal diffusion‐weighted magnetic resonance imaging (DWI‐PMAs) are well‐established for patients with status epilepticus (SE), but knowledge on patterns of DWI‐PMAs and their prognostic impact is sparse. Methods This systematic review and individual participant data meta‐analysis included observational studies ...
Andrea Enerstad Bolle, Silvana Sarria‐Estrada, Thomas Bonduelle, Bertram Daniel Dynesen, Manuel Toledo, Zhu Chung Che, Kjell Heuser, Anastasios Chatzikonstantinou, Jérôme Aupy, Udaya Seneviratne, Estevo Santamarina Perez, Christoph Patrick Beier   +11 more
wiley   +1 more source

A Low Metallicity Massive Contact Binary Star System Candidate in WLM Identified by Hubble and James Webb Space Telescope Imaging

The Astrophysical Journal
We present archival Hubble Space Telescope (HST) and JWST ultraviolet through near-infrared time series photometric observations of a massive minimal-contact binary candidate in the metal-poor galaxy Wolf–Lundmark–Melotte ( Z  = 0.14 Z _⊙ ).
Maude Gull, Daniel R. Weisz, Kareem El-Badry, Jan Henneco, Alessandro Savino, Meredith Durbin, Yumi Choi, Roger E. Cohen, Andrew A. Cole, Matteo Correnti, Julianne J. Dalcanton, Karoline M. Gilbert, Steven R. Goldman, Puragra Guhathakurta, Kristen B. W. McQuinn, Max J. B. Newman, Evan D. Skillman, Benjamin F. Williams   +17 more
doaj   +1 more source

X-Ray and UV Observations of the Contact Binary KIC 9832227

The Astronomical Journal, 2023
We investigate the X-ray and UV emission from the contact binary star KIC 9832227, which was observed with XMM-Newton for one orbital cycle. The binary is detected with an average X-ray luminosity of 3.4 × 10 ^30 erg s ^−1 .
Dirk Pandel, Lawrence A. Molnar
doaj   +1 more source

On the lower limit of contact binary star periods

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT Data for 405 contact binary systems extracted from a recent compilation are supplemented by information from the literature for an additional ten ultrashort period (P < 0.2 d) binaries. This is used to calibrate period–luminosity–temperature relations for contact binaries.
openaire   +1 more source

Radial velocity mapping of Paczyński's star AW UMa: not a contact binary [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
Abstract We present 2D (radial velocity, orbital phase) spectroscopic results for the very low mass-ratio close binary AW UMa which strongly indicate that the spectroscopic mass ratio (qsp= 0.10) does not agree with the photometrically derived one and that the widely adopted contact binary model appears to experience serious ...
Pribulla, Theodor, Rucinski, Slavek M.
openaire   +2 more sources

Impact of Asymptomatic Intracranial Hemorrhage on Outcome After Endovascular Stroke Treatment

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Endovascular treatment (EVT) achieves high rates of recanalization in acute large‐vessel occlusion (LVO) stroke, but functional recovery remains heterogeneous. While symptomatic intracranial hemorrhage (sICH) has been well studied, the prognostic impact of asymptomatic intracranial hemorrhage (aICH) after EVT is less certain ...
Shihai Yang, Chengsong Yue, Zhuang Li, Xiaolei Shi, Haoxuan Zhu, Jie Yang, Linyu Li, Jiaxing Song, Shitao Fan, Gaoming Li, Wenzhe Sun, Zhixian Ye, Jiacheng Huang, Dahong Yang, Jinfu Ma, Xu Xu, Zhixi Wang, Lilan Wang, Guojian Liu, Fengli Li, Changwei Guo, Li Qi, Wenjie Zi   +22 more
wiley   +1 more source

Orbital Modulation Induced by a Third Component in the Overcontact Binary V0554 Dra

The Astrophysical Journal
We present the first comprehensive photometric and spectroscopic analysis of the overcontact eclipsing binary V0554 Dra. By simultaneously modeling multiband light curves and radial velocity data using the Wilson–Devinney code, we determine that the ...
Mu-Lan Deng, Jia-Xin Zhao, Jie Wei, Yi-Man Liu, Chao-Yue Li, Jie Zheng, Kai Huang, Lin Cao, Hai-yin Qing, Yu Zhang, Lin-Qiao Jiang   +10 more
doaj   +1 more source