Results 31 to 40 of about 126,759 (296)

The Photometric Amplitude and Mass Ratio Distributions of Contact Binary Stars [PDF]

, 2001
The distribution of the light variation amplitudes A(a), in addition to determining the number of undiscovered contact binary systems falling below photometric detection thresholds and thus lost to statistics, can serve as a tool in determination of the ...
Slavek M. Rucinski, Slavek M. Rucinski
openalex   +3 more sources

CCD Photometry of Faint Variable Stars in the Globular Cluster NGC 6752 [PDF]

, 1999
We present the results of a photometric survey for variable stars in the field of the nearby globular cluster NGC 6752. The cluster was monitored in 1996 and 1997 for a total of 54 hours with 3 different CCD cameras mounted on the 1.0-m Swope telescope ...
Alcaino G., Buonanno R., Cannon R. D., Heber U., Ian B. Thompson, Janusz Kaluzny, Kaluny J., Kaluny J., Moehler S., Schwarzenberg-Czerny A., Schwarzenberg-Czerny A., Wojtek Krzeminski, Wojtek Pych   +12 more
core   +3 more sources

Mass Ratio Estimates for Overcontact Binaries Using the Derivatives of Light Curves

The Astrophysical Journal, 2023
The photometric mass ratios of eclipsing binaries are usually estimated by light-curve modeling with an iterative method. We propose a new method for estimating the photometric mass ratio of an overcontact binary using the derivatives of a light curve ...
Shinjirou Kouzuma
doaj   +1 more source

Search for Variable Stars in the Globular Cluster M3 [PDF]

, 1997
We describe here results of a photometric time-sequence survey of the globular cluster M3 (NGC 5272), in a search for contact and detached eclipsing binary stars.
Clement, C., Hilditch, R. W., Kaluzny, J., Rucinski, S. M.   +3 more
core   +2 more sources

Contact tracing of binary stars: Pathways to stellar mergers (Corrigendum) [PDF]

Astronomy & Astrophysics
Jan Henneco, F. R. N. Schneider, E. Laplace   +2 more
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Three Ultra-short-period Contact Eclipsing Binary Systems Mined from Massive Astronomical Surveys

The Astronomical Journal, 2023
We present the photometric analysis of three ultra-short-period total eclipsing binaries in contact configuration, CRTS_J172718.0+431624, OGLE-BLG-ECL-000104, and OGLE-BLG-ECL-000012, mined from massive astronomical surveys.
Athanasios Papageorgiou, Panagiota-Eleftheria Christopoulou, C. E. Ferreira Lopes, Eleni Lalounta, Márcio Catelan, Andrew J. Drake   +5 more
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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
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Resonant Oscillations and Tidal Heating in Coalescing Binary Neutron Stars [PDF]

, 1994
Tidal interaction in a coalescing neutron star binary can resonantly excite the g-mode oscillations of the neutron star when the frequency of the tidal driving force equals the intrinsic g-mode frequencies.
Lai, Dong
core   +3 more sources

Comparative Study of TESS Photometry and Radial Velocities on Six Early K-type Contact Binaries with Similar Periods around 0.268 Day

The Astronomical Journal, 2023
High-precision light curves were extracted from TESScut images. Together with APOGEE and LAMOST medium-resolution spectra, a joint study was made for six early K-type contact binary candidates selected unbiasedly with orbital periods around 0.268 day. It
N.-P. Liu, S.-B. Qian, W.-P. Liao, Y. Huang, Z.-L. Yuan   +4 more
doaj   +1 more source

BSN-III: The First Multiband Photometric Study on the Eight Total Eclipse Contact Binary Stars

This study continues our in-depth investigation of total-eclipse W Ursae Majoris-type contact binaries by analyzing eight new systems, complementing our previous work.
Atila Poro, Kai Li, R. Michel, Li-Heng Wang, F. Aliçavuş, Ghazal Alizadeh, L. Altamirano-Dévora, Francisco Tamayo, H. Aceves   +8 more
openalex   +2 more sources